<?xml version="1.0" encoding="UTF-8"?>
<metadata>
  <idinfo>
    <citation>
      <citeinfo>
        <origin>Renee K. Takesue</origin>
        <pubdate>20220726</pubdate>
        <title>Metal and other element partitioning in southwest Puerto Rico ultramafic soil, Rio Loco sediment, and Guanica Bay sediment</title>
        <geoform>comma-delimited text</geoform>
        <serinfo>
          <sername>data release</sername>
          <issue>DOI:10.5066/P9MN33MB</issue>
        </serinfo>
        <pubinfo>
          <pubplace>Pacific Coastal and Marine Science Center, Santa Cruz, California</pubplace>
          <publish>U.S. Geological Survey</publish>
        </pubinfo>
        <onlink>https://doi.org/10.5066/P9MN33MB</onlink>
        <onlink>https://www.sciencebase.gov/catalog/item/614e30d0d34e0df5fb98a12f</onlink>
      </citeinfo>
    </citation>
    <descript>
      <abstract>Five-stage sequential extractions were performed on ultramafic soil from Bosque Susua and Guanica Dry Forest, stream sediment from Rios Loco and Yauco, and nearshore sediment from Guanica Bay in southwest Puerto Rico. Sequential extractions showed partitioning of geologically enriched metals and other elements among five phases: 1) adsorbed and calcium-bound, 2) iron-, manganese-oxyhydroxide-bound, 3) crystalline iron-oxide-bound, 4) sulfide-bound, and 5) residual. Total element contents are also reported. Soil and sediment were collected between June 19, 2017, and March 27, 2018.</abstract>
      <purpose>Partitioning of potentially toxic metals was investigated in serpentinite other types of soils in Rio Loco and adjacent watersheds to determine potential metal mobility, bioavailability, and environmental health risk from geologically enriched metals.</purpose>
      <supplinf>Additional information about the field activities from which these data were derived is available online at:
https://cmgds.er.usgs.gov/fan_info.php?fan=2017-625-FA
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.</supplinf>
    </descript>
    <timeperd>
      <timeinfo>
        <rngdates>
          <begdate>20170619</begdate>
          <enddate>20180327</enddate>
        </rngdates>
      </timeinfo>
      <current>Stream and nearshore sediment were collected in June 2017. Soil was collected in January and March 2018.</current>
    </timeperd>
    <status>
      <progress>Complete</progress>
      <update>None planned</update>
    </status>
    <spdom>
      <bounding>
        <westbc>-66.92442</westbc>
        <eastbc>-66.84019</eastbc>
        <northbc>18.07070</northbc>
        <southbc>17.95574</southbc>
      </bounding>
    </spdom>
    <keywords>
      <theme>
        <themekt>ISO 19115 Topic Category</themekt>
        <themekey>environment</themekey>
        <themekey>geoscientificInformation</themekey>
      </theme>
      <theme>
        <themekt>Data Categories for Marine Planning</themekt>
        <themekey>Substrate</themekey>
      </theme>
      <theme>
        <themekt>USGS Thesaurus</themekt>
        <themekey>geochemistry</themekey>
        <themekey>soil chemistry</themekey>
        <themekey>mass spectroscopy</themekey>
      </theme>
      <theme>
        <themekt>Marine Realms Information Bank (MRIB) keywords</themekt>
        <themekey>Watershed</themekey>
        <themekey>Coastal plain</themekey>
        <themekey>River</themekey>
        <themekey>Bay</themekey>
        <themekey>Soil</themekey>
        <themekey>Sediment</themekey>
      </theme>
      <theme>
        <themekt>None</themekt>
        <themekey>U.S. Geological Survey</themekey>
        <themekey>USGS</themekey>
        <themekey>Coastal and Marine Hazards and Resources Program</themekey>
        <themekey>CMHRP</themekey>
        <themekey>Pacific Coastal and Marine Science Center</themekey>
        <themekey>PCMSC</themekey>
      </theme>
      <theme>
        <themekt>USGS Metadata Identifier</themekt>
        <themekey>USGS:614e30d0d34e0df5fb98a12f</themekey>
      </theme>
      <place>
        <placekt>Geographic Names Information System (GNIS)</placekt>
        <placekey>Island of Puerto Rico</placekey>
        <placekey>Rio Loco</placekey>
        <placekey>Rio Yauco</placekey>
        <placekey>Guanica Bay</placekey>
      </place>
      <place>
        <placekt>None</placekt>
        <placekey>Bosque Estatal de Susua</placekey>
      </place>
    </keywords>
    <accconst>None</accconst>
    <useconst>USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey as the originator(s) of the dataset and in products derived from these data.</useconst>
    <ptcontac>
      <cntinfo>
        <cntorgp>
          <cntorg>U.S. Geological Survey, Pacific Coastal and Marine Science Center</cntorg>
          <cntper>PCMSC Science Data Coordinator</cntper>
        </cntorgp>
        <cntaddr>
          <addrtype>mailing and physical</addrtype>
          <address>2885 Mission Street</address>
          <city>Santa Cruz</city>
          <state>CA</state>
          <postal>95060</postal>
        </cntaddr>
        <cntvoice>831-427-4747</cntvoice>
        <cntemail>pcmsc_data@usgs.gov</cntemail>
      </cntinfo>
    </ptcontac>
    <browse>
      <browsen>https://www.sciencebase.gov/catalog/file/get/614e30d0d34e0df5fb98a12f?name=SouthwestPuertoRicoExtractions_sitemap.jpg&amp;allowOpen=true</browsen>
      <browsed>Sites in southwest Puerto Rico where metal partitioning was explored.</browsed>
      <browset>JPEG</browset>
    </browse>
    <datacred>Soil and sediment were sent for sequential extractions and total element content determinations to the Analytical Chemistry Project of the USGS Geology, Geophysics, and Geochemistry Science Center (GGGSC). GGGSC performed QA/QC checks.</datacred>
    <native>Geochemical data are tabulated in comma separated variable (CSV) format.</native>
  </idinfo>
  <dataqual>
    <attracc>
      <attraccr>Total element content and sequential extraction data are deemed acceptable if recovery is +/- 15 percent at five times the lower limit of determination and the calculated relative standard deviation of duplicate samples is no greater than 15 percent. Fifteen of twenty four determinations of the attribute Total Selenium (Se_total) and one of twenty four determinations of the attribute Total Tellurium (Te_total) did not meet these quality control criteria and were replaced with the numerical code -1111.</attraccr>
    </attracc>
    <logic>No formal logical consistency tests were conducted.</logic>
    <complete>Silica and rare earth element contents were not determined in sequential extractions. Sodium was not measured in the adsorbed, calcium-bound, and iron and manganese oxyhydroxide fractions. Potassium was not measured in the sulfide-bound and residual fractions.</complete>
    <posacc>
      <horizpa>
        <horizpar>A Garmin 78sc handheld GPS reported a horizontal accuracy of +/- 3 meters.</horizpar>
      </horizpa>
    </posacc>
    <lineage>
      <srcinfo>
        <srccite>
          <citeinfo>
            <origin>International Atomic Energy Agency</origin>
            <pubdate>1987</pubdate>
            <title>IAEA-RGU-1, Uranium Ore Certified Reference Material</title>
            <pubinfo>
              <pubplace>online</pubplace>
              <publish>International Atomic Energy Agency</publish>
            </pubinfo>
            <onlink>https://nucleus.iaea.org/sites/ReferenceMaterials/Pages/IAEA-RGU-1.aspx</onlink>
          </citeinfo>
        </srccite>
        <typesrc>online document</typesrc>
        <srctime>
          <timeinfo>
            <rngdates>
              <begdate>20161020</begdate>
              <enddate>20190812</enddate>
            </rngdates>
          </timeinfo>
          <srccurr>The certification of IAEA-RGU-1 is valid indefinitely.</srccurr>
        </srctime>
        <srccitea>IAEA-RGU-1 Certificate of analysis</srccitea>
        <srccontr>The Certificate lists the certified properties for IAEA-RGU-1, their values, and estimated uncertainties.</srccontr>
      </srcinfo>
      <srcinfo>
        <srccite>
          <citeinfo>
            <origin>International Atomic Energy Agency</origin>
            <pubdate>1987</pubdate>
            <title>IAEA-RGTh-1, Thorium Ore Certified Reference Material</title>
            <pubinfo>
              <pubplace>online</pubplace>
              <publish>International Atomic Energy Agency</publish>
            </pubinfo>
            <onlink>https://nucleus.iaea.org/sites/ReferenceMaterials/Pages/IAEA-RGTh-1.aspx</onlink>
          </citeinfo>
        </srccite>
        <typesrc>online document</typesrc>
        <srctime>
          <timeinfo>
            <rngdates>
              <begdate>20161020</begdate>
              <enddate>20190812</enddate>
            </rngdates>
          </timeinfo>
          <srccurr>The certification of IAEA-RGTh-1 is valid indefinitely.</srccurr>
        </srctime>
        <srccitea>IAEA-RGTh-1 Certificate of analysis</srccitea>
        <srccontr>The Certificate lists the certified properties for IAEA-RGTh-1, their values, and estimated uncertainties.</srccontr>
      </srcinfo>
      <srcinfo>
        <srccite>
          <citeinfo>
            <origin>Ballestra, S.</origin>
            <origin>Gastaud, J.</origin>
            <origin>Lopez, J.J.</origin>
            <origin>Parsi, P.</origin>
            <origin>Vas, D.</origin>
            <pubdate>1994</pubdate>
            <title>Intercomparison of radionuclide measurements on marine sediment sample IAEA-300</title>
            <pubinfo>
              <pubplace>online</pubplace>
              <publish>International Atomic Energy Agency</publish>
            </pubinfo>
            <onlink>https://inis.iaea.org/collection/NCLCollectionStore/_Public/35/066/35066057.pdf</onlink>
          </citeinfo>
        </srccite>
        <typesrc>online document</typesrc>
        <srctime>
          <timeinfo>
            <rngdates>
              <begdate>20161020</begdate>
              <enddate>20190812</enddate>
            </rngdates>
          </timeinfo>
          <srccurr>The certification of IAEA-300 is valid indefinitely.</srccurr>
        </srctime>
        <srccitea>Certificate of analysis</srccitea>
        <srccontr>The Certificate lists the certified properties for IAEA-300, their values, and estimated uncertainties.</srccontr>
      </srcinfo>
      <procstep>
        <procdesc>SOIL AND SEDIMENT COLLECTION: Find-grained stream sediment was collected by hand from stream banks or stream beds June 19-21, 2017, and placed into wire-top polyethylene bags. Seabed sediment was collected using a boat-deployed Petit Ponar benthic grab sampler, and the 0-2 centimeter surface layer was subsampled into wire-top polyethylene bags. Forest soil was collected from Guanica Dry Forest on January 19, 2018, and from two sites in the Bosque Susua on March 27, 2018. A shallow trench was dug in the forest floor at each site and 2-centimeter-thick soil intervals were subsampled into wire-top polyethylene bags. Soils up to 6 centimeters deep were sampled from Guanica Dry Forest and up to 8 centimeters deep from Bosque Susua.</procdesc>
        <procdate>20180327</procdate>
      </procstep>
      <procstep>
        <procdesc>SEDIMENT SAMPLE PREPARATION: Soil and sediment were oven-dried at 60 degrees Celsius, disaggregated gently to avoid changing grain sizes, and dry-sieved through stainless steel sieves to obtain the less than 0.063 millimeter-diameter fine fraction for sequential extractions and analyses of total element contents.</procdesc>
        <procdate>20190808</procdate>
      </procstep>
      <procstep>
        <procdesc>SHORT-LIVED RADIONUCLIDE ACTIVITIES: Bulk sediment was oven-dried at 60 degrees Celsius, homogenized, and packed into 10 milliliter vials with air-tight caps. Activities of short-lived radionuclides were counted for 72 hours in a high-purity low-background germanium (HPGe) well detector at the USGS Pacific Coastal and Marine Science Center and quantified relative to certified reference materials with similar geometries and counting times. Beryllium-7 activities were counted at 477.6 kiloelectron volts (keV) and Cesium-137 activities at 661.6 keV. Unsupported Lead-210 activities were calculated by subtracting Lead-210 activities counted at 46.52 keV from the average of supported Radium-226 activities counted indirectly at 351.9 keV and 609.3 keV. Detector efficiency for Beryllium-7 was interpolated from peaks at 351.9 keV and 609.3 keV using International Atomic Energy Agency (IAEA) reference standard RGU-1. Detector efficiency for Cesium-137 was determined using IAEA Standard Reference Material 300. Detector efficiency for Lead-210 was determined using IAEA standards RGU-1 and RGTh-1. Combined uncertainties include 1-sigma counting errors, detector efficiency, and background corrections.</procdesc>
        <procdate>20190103</procdate>
      </procstep>
      <procstep>
        <procdesc>SEQUENTIAL EXTRACTIONS: Fine-grained (less than 0.063-mm-diameter) soil and sediment were sent to the Analytical Chemistry Project of the USGS Geology, Geophysics, and Geochemistry Science Center (GGGSC), which contracted with nationally accredited AGAT Laboratories for 5-stage sequential extractions. The five phases are operationally defined and include: 1) adsorbed and calcium-bound, 2) hydrous iron-, manganese-oxide-bound, 3) crystalline iron-oxide-bound, 4) sulfide-bound, and 5) residual. Quantification was performed by inductively coupled plasma optical emission spectroscopy (ICP-OES) for major and some minor elements and by inductively coupled plasma mass spectroscopy (ICP-MS) for some minor and all trace elements.</procdesc>
        <procdate>20191011</procdate>
        <proccont>
          <cntinfo>
            <cntperp>
              <cntper>Jaime Azain</cntper>
              <cntorg>U.S. Geological Survey, Central Mineral and Environmental Resources Science Center</cntorg>
            </cntperp>
            <cntpos>Research Geologist</cntpos>
            <cntaddr>
              <addrtype>mailing</addrtype>
              <address>Denver Federal Center, Bldg 20</address>
              <city>Denver</city>
              <state>CO</state>
              <postal>80225</postal>
            </cntaddr>
            <cntvoice>303-236-9376</cntvoice>
            <cntemail>jsazain@usgs.gov</cntemail>
          </cntinfo>
        </proccont>
      </procstep>
      <procstep>
        <procdesc>TOTAL ELEMENT CONTENTS: Fine-grained (less than 0.063-mm-diameter) soil and sediment were sent to the Analytical Chemistry Project of the USGS Geology, Geophysics, and Geochemistry Science Center (GGGSC), which contracted with nationally accredited AGAT Laboratories for total element content analyses. Soil and sediment were decomposed with a four-acid digestion at low temperature or a sodium peroxide fusion at 750 degrees Celsius followed by reconstitution in nitric acid for elements hosted in acid-resistant minerals. Quantification was performed by inductively coupled plasma optical emission spectroscopy (ICP-OES) for major and some minor elements and by inductively coupled plasma mass spectroscopy (ICP-MS) for some minor and all trace elements. Total mercury was measured by cold vapor atomic absorption.</procdesc>
        <procdate>20191011</procdate>
        <proccont>
          <cntinfo>
            <cntperp>
              <cntper>Jaime Azain</cntper>
              <cntorg>U.S. Geological Survey, Central Mineral and Environmental Resources Science Center</cntorg>
            </cntperp>
            <cntpos>Research Geologist</cntpos>
            <cntaddr>
              <addrtype>mailing</addrtype>
              <address>Denver Federal Center, Bldg 20</address>
              <city>Denver</city>
              <state>CO</state>
              <postal>80225</postal>
            </cntaddr>
            <cntvoice>303-236-9376</cntvoice>
            <cntemail>jsazain@usgs.gov</cntemail>
          </cntinfo>
        </proccont>
      </procstep>
    </lineage>
  </dataqual>
  <spdoinfo>
    <direct>Point</direct>
    <ptvctinf>
      <sdtsterm>
        <sdtstype>Point</sdtstype>
        <ptvctcnt>24</ptvctcnt>
      </sdtsterm>
    </ptvctinf>
  </spdoinfo>
  <spref>
    <horizsys>
      <geograph>
        <latres>0.00001</latres>
        <longres>0.00001</longres>
        <geogunit>Decimal degrees</geogunit>
      </geograph>
      <geodetic>
        <horizdn>D_WGS_1984</horizdn>
        <ellips>WGS84</ellips>
        <semiaxis>6378137.0000</semiaxis>
        <denflat>298.2572</denflat>
      </geodetic>
    </horizsys>
  </spref>
  <eainfo>
    <detailed>
      <enttyp>
        <enttypl>Attribute table</enttypl>
        <enttypd>Table of data. Abbreviations: -1111, data did not meet quality control criteria described in the Attribute Accuracy Report; -9999, value was below the reporting limit given in the Attribute Definition; Blank cells indicate no measurement was made (no data).</enttypd>
        <enttypds>Producer defined</enttypds>
      </enttyp>
      <attr>
        <attrlabl>Sample I.D.</attrlabl>
        <attrdef>Unique laboratory identifier assigned to each sample by the GGGSC Analytical Chemistry Laboratory</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <udom>Sequential sample identification numbers assigned by the GGGSC Analytical Chemistry Laboratory</udom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Field I.D.</attrlabl>
        <attrdef>Sample identifier assigned during field collection based on location.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <udom>Unique alphanumeric sample identifiers</udom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Sample type</attrlabl>
        <attrdef>Type of sediment sample</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <edom>
            <edomv>TER</edomv>
            <edomvd>terrestrial sample collected at or landward of the shoreline</edomvd>
            <edomvds>Producer defined</edomvds>
          </edom>
        </attrdomv>
        <attrdomv>
          <edom>
            <edomv>MAR</edomv>
            <edomvd>marine sample collected seaward of the shoreline</edomvd>
            <edomvds>Producer defined</edomvds>
          </edom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Sampled feature</attrlabl>
        <attrdef>Geomorphic feature from which the sample was collected</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <edom>
            <edomv>soil</edomv>
            <edomvd>in situ forest soil</edomvd>
            <edomvds>Producer defined</edomvds>
          </edom>
        </attrdomv>
        <attrdomv>
          <edom>
            <edomv>stream</edomv>
            <edomvd>flowing freshwater body</edomvd>
            <edomvds>Producer defined</edomvds>
          </edom>
        </attrdomv>
        <attrdomv>
          <edom>
            <edomv>seabed</edomv>
            <edomvd>seafloor</edomvd>
            <edomvds>Producer defined</edomvds>
          </edom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Collection date</attrlabl>
        <attrdef>Date the sample was collected, in mm/dd/yy</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>06/19/17</rdommin>
            <rdommax>03/27/18</rdommax>
            <attrunit>mm/dd/yy</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Latitude</attrlabl>
        <attrdef>Latitude where the sample was collected</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>17.95574</rdommin>
            <rdommax>18.07070</rdommax>
            <attrunit>decimal degrees</attrunit>
            <attrmres>0.00001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Longitude</attrlabl>
        <attrdef>Longitude where the sample was collected</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>-66.92442</rdommin>
            <rdommax>-66.84019</rdommax>
            <attrunit>decimal degrees</attrunit>
            <attrmres>0.00001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Datum</attrlabl>
        <attrdef>Geodetic datum coordinate system</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <edom>
            <edomv>WGS84</edomv>
            <edomvd>World Geodetic System 1984</edomvd>
            <edomvds>Producer defined</edomvds>
          </edom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Drainage name</attrlabl>
        <attrdef>Geographic area or drainage basin in which sediment was collected</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <edom>
            <edomv>Guanica Bay</edomv>
            <edomvd>Guanica Bay</edomvd>
            <edomvds>Producer defined</edomvds>
          </edom>
        </attrdomv>
        <attrdomv>
          <edom>
            <edomv>Rio Loco</edomv>
            <edomvd>Rio Loco watershed</edomvd>
            <edomvds>Producer defined</edomvds>
          </edom>
        </attrdomv>
        <attrdomv>
          <edom>
            <edomv>Yauco</edomv>
            <edomvd>Rio Yauco watershed</edomvd>
            <edomvds>Producer defined</edomvds>
          </edom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Beryllium-7 activity</attrlabl>
        <attrdef>Activity of Beryllium-7 corrected to the date of collection.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.0</rdommin>
            <rdommax>0.7</rdommax>
            <attrunit>disintegrations per minute per gram (dpm per g)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Beryllium-7 activity uncertainty</attrlabl>
        <attrdef>Combined uncertainty from 1-sigma counting errors, detector efficiency, and background corrections.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.1</rdommin>
            <rdommax>0.1</rdommax>
            <attrunit>disintegrations per minute per gram (dpm per g)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Cesium-137 activity</attrlabl>
        <attrdef>Activity of Cesium-137 corrected to the date of collection.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.0</rdommin>
            <rdommax>0.3</rdommax>
            <attrunit>disintegrations per minute per gram (dpm per g)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Cesium-137 activity uncertainty</attrlabl>
        <attrdef>Combined uncertainty from 1-sigma counting errors, detector efficiency, and background corrections.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.0</rdommin>
            <rdommax>0.2</rdommax>
            <attrunit>disintegrations per minute per gram (dpm per g)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Unsupported Lead-210 activity</attrlabl>
        <attrdef>Activity of Lead-210 corrected to the date of collection.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>-0.2</rdommin>
            <rdommax>5.1</rdommax>
            <attrunit>disintegrations per minute per gram (dpm per g)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Unsupported Lead-210 activity uncertainty</attrlabl>
        <attrdef>Combined uncertainty from 1-sigma counting errors, detector efficiency, and background corrections.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.1</rdommin>
            <rdommax>0.2</rdommax>
            <attrunit>disintegrations per minute per gram (dpm per g)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Al_total</attrlabl>
        <attrdef>Total aluminum (Al) content determined by the sodium peroxide fusion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>1.18</rdommin>
            <rdommax>7.73</rdommax>
            <attrunit>weight percent (wt %)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Al_ads_Ca</attrlabl>
        <attrdef>Aluminum (Al) content of the adsorbed (ads) and calcium (Ca)-bound fraction. -9999, less than the reporting limit of 0.01.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.01</rdommin>
            <rdommax>0.01</rdommax>
            <attrunit>weight percent (wt %)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Al_hydr_Fe_Mn</attrlabl>
        <attrdef>Aluminum (Al) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.31</rdommin>
            <rdommax>0.99</rdommax>
            <attrunit>weight percent (wt %)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Al_FeOx</attrlabl>
        <attrdef>Aluminum (Al) content of the crystalline iron oxide (FeOx) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.02</rdommin>
            <rdommax>0.11</rdommax>
            <attrunit>weight percent (wt %)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Al_sulf</attrlabl>
        <attrdef>Aluminum (Al) content of the sulfide (sulf) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.29</rdommin>
            <rdommax>0.91</rdommax>
            <attrunit>weight percent (wt %)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Al_resid</attrlabl>
        <attrdef>Aluminum (Al) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.44</rdommin>
            <rdommax>4.27</rdommax>
            <attrunit>weight percent (wt %)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ca_total</attrlabl>
        <attrdef>Total calcium (Ca) content determined by the sodium peroxide fusion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.47</rdommin>
            <rdommax>20.10</rdommax>
            <attrunit>weight percent (wt %)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ca_ads_Ca</attrlabl>
        <attrdef>Calcium (Ca) content of the adsorbed (ads) and calcium (Ca)-bound fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>752</rdommin>
            <rdommax>179,000</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ca_hydr_Fe_Mn</attrlabl>
        <attrdef>Calcium (Ca) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>803</rdommin>
            <rdommax>33,800</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ca_FeOx</attrlabl>
        <attrdef>Calcium (Ca) content of the crystalline iron oxide (FeOx) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>215</rdommin>
            <rdommax>772</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ca_sulf</attrlabl>
        <attrdef>Calcium (Ca) content of the sulfide (sulf) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>641</rdommin>
            <rdommax>3,060</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ca_resid</attrlabl>
        <attrdef>Calcium (Ca) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>1,080</rdommin>
            <rdommax>11,400</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Fe_total</attrlabl>
        <attrdef>Total iron (Fe) content determined by the sodium peroxide fusion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>2.9</rdommin>
            <rdommax>16.6</rdommax>
            <attrunit>weight percent (wt %)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Fe_ads_Ca</attrlabl>
        <attrdef>Iron (Fe) content of the adsorbed (ads) and calcium (Ca)-bound fraction. -9999, less than the reporting limit of 5.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>6</rdommin>
            <rdommax>759</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Fe_hydr_Fe_Mn</attrlabl>
        <attrdef>Iron (Fe) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>9,390</rdommin>
            <rdommax>22,300</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Fe_FeOx</attrlabl>
        <attrdef>Iron (Fe) content of the crystalline iron oxide (FeOx) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>1,790</rdommin>
            <rdommax>29,000</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Fe_sulf</attrlabl>
        <attrdef>Iron (Fe) content of the sulfide (sulf) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>7,850</rdommin>
            <rdommax>61,100</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Fe_resid</attrlabl>
        <attrdef>Iron (Fe) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>6,910</rdommin>
            <rdommax>55,500</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>K_total</attrlabl>
        <attrdef>Total potassium (K) content determined by the sodium peroxide fusion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.05</rdommin>
            <rdommax>1.61</rdommax>
            <attrunit>weight percent (wt %)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>K_ads_Ca</attrlabl>
        <attrdef>Potssium (K) content of the adsorbed (ads) and calcium (Ca)-bound fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>137</rdommin>
            <rdommax>2,570</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>K_hydr_Fe_Mn</attrlabl>
        <attrdef>Potssium (K) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>77</rdommin>
            <rdommax>1,200</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>K_FeOx</attrlabl>
        <attrdef>Potssium (K) content of the crystalline iron oxide (FeOx) fraction. -9999, less than the reporting limit of 5.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>7</rdommin>
            <rdommax>138</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Mg_total</attrlabl>
        <attrdef>Total magnesium (Mg) content determined by the sodium peroxide fusion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>1.93</rdommin>
            <rdommax>12.10</rdommax>
            <attrunit>weight percent (wt %)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Mg_ads_Ca</attrlabl>
        <attrdef>Magnesium (Mg) content of the adsorbed (ads) and calcium (Ca)-bound fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>1,410</rdommin>
            <rdommax>9,110</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Mg_hydr_Fe_Mn</attrlabl>
        <attrdef>Magnesium (Mg) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>8,500</rdommin>
            <rdommax>40,000</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Mg_FeOx</attrlabl>
        <attrdef>Magnesium (Mg) content of the crystalline iron oxide (FeOx) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>823</rdommin>
            <rdommax>22,300</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Mg_sulf</attrlabl>
        <attrdef>Magnesium (Mg) content of the sulfide (sulf) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>3,150</rdommin>
            <rdommax>30,000</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Mg_resid</attrlabl>
        <attrdef>Magnesium (Mg) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>3,450</rdommin>
            <rdommax>31,000</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Na_total</attrlabl>
        <attrdef>Total sodium (Na) content determined by the sodium peroxide fusion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.05</rdommin>
            <rdommax>2.84</rdommax>
            <attrunit>weight percent (wt %)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Na_FeOx</attrlabl>
        <attrdef>Sodium (Na) content of the crystalline iron oxide (FeOx) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>23</rdommin>
            <rdommax>204</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Na_sulf</attrlabl>
        <attrdef>Sodium (Na) content of the sulfide (sulf) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>14</rdommin>
            <rdommax>104</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Na_resid</attrlabl>
        <attrdef>Sodium (Na) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>402</rdommin>
            <rdommax>16,300</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>P_total</attrlabl>
        <attrdef>Total phosphorus (P) content determined by the four-acid digestion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>216</rdommin>
            <rdommax>1,320</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>P_ads_Ca</attrlabl>
        <attrdef>Phosphorus (P) content of the adsorbed (ads) and calcium (Ca)-bound fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>6</rdommin>
            <rdommax>121</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>P_hydr_Fe_Mn</attrlabl>
        <attrdef>Phosphorus (P) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>5</rdommin>
            <rdommax>924</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>P_FeOx</attrlabl>
        <attrdef>Phosphorus (P) content of the crystalline iron oxide (FeOx) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>40</rdommin>
            <rdommax>144</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>P_sulf</attrlabl>
        <attrdef>Phosphorus (P) content of the sulfide (sulf) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>57</rdommin>
            <rdommax>251</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>P_resid</attrlabl>
        <attrdef>Phosphorus (P) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>33</rdommin>
            <rdommax>159</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>S_total</attrlabl>
        <attrdef>Total sulfur (S) content determined by the sodium peroxide fusion method. -9999, less than the reporting limit of 0.1.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.1</rdommin>
            <rdommax>1.7</rdommax>
            <attrunit>weight percent (wt %)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>S_ads_Ca</attrlabl>
        <attrdef>Sulfur (S) content of the adsorbed (ads) and calcium (Ca)-bound fraction. -9999, less than the reporting limit of 0.01.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.14</rdommin>
            <rdommax>0.49</rdommax>
            <attrunit>weight percent (wt %)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>S_hydr_Fe_Mn</attrlabl>
        <attrdef>Sulfur (S) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction. -9999, less than the reporting limit of 0.01.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.01</rdommin>
            <rdommax>0.01</rdommax>
            <attrunit>weight percent (wt %)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>S_FeOx</attrlabl>
        <attrdef>Sulfur (S) content of the crystalline iron oxide (FeOx) fraction. -9999, less than the reporting limit of 0.01.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>less than 0.01</rdommin>
            <rdommax>less than 0.01</rdommax>
            <attrunit>weight percent (wt %)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>S_sulf</attrlabl>
        <attrdef>Sulfur (S) content of the sulfide (sulf) fraction. -9999, less than the reporting limit of 0.01.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.01</rdommin>
            <rdommax>1.13</rdommax>
            <attrunit>weight percent (wt %)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>S_resid</attrlabl>
        <attrdef>Sulfur (S) content of the residual (resid) fraction. -9999, less than the reporting limit of 0.01.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.01</rdommin>
            <rdommax>0.02</rdommax>
            <attrunit>weight percent (wt %)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Si_total</attrlabl>
        <attrdef>Total silicon (Si) content determined by the sodium peroxide fusion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>9.9</rdommin>
            <rdommax>25.4</rdommax>
            <attrunit>weight percent (wt %)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ti_total</attrlabl>
        <attrdef>Total titanium (Ti) content determined by the sodium peroxide fusion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.04</rdommin>
            <rdommax>0.61</rdommax>
            <attrunit>weight percent (wt %)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ti_ads_Ca</attrlabl>
        <attrdef>Titanium (Ti) content of the adsorbed (ads) and calcium (Ca)-bound fraction. -9999, less than the reporting limit of 0.005.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>less than 0.005</rdommin>
            <rdommax>less than 0.005</rdommax>
            <attrunit>weight percent (wt %)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ti_hydr_Fe_Mn</attrlabl>
        <attrdef>Titanium (Ti) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction. -9999, less than the reporting limit of 0.005.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>less than 0.005</rdommin>
            <rdommax>less than 0.005</rdommax>
            <attrunit>weight percent (wt %)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ti_FeOx</attrlabl>
        <attrdef>Titanium (Ti) content of the crystalline iron oxide (FeOx) fraction. -9999, less than the reporting limit of 0.005.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>less than 0.005</rdommin>
            <rdommax>less than 0.005</rdommax>
            <attrunit>weight percent (wt %)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ti_sulf</attrlabl>
        <attrdef>Titanium (Ti) content of the sulfide (sulf) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.011</rdommin>
            <rdommax>0.122</rdommax>
            <attrunit>weight percent (wt %)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ti_resid</attrlabl>
        <attrdef>Titanium (Ti) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.026</rdommin>
            <rdommax>0.466</rdommax>
            <attrunit>weight percent (wt %)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ag_total</attrlabl>
        <attrdef>Total silver (Ag) content determined by the four-acid digestion method. -9999, less than the reporting limit of 0.01.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.02</rdommin>
            <rdommax>0.92</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ag_ads_Ca</attrlabl>
        <attrdef>Silver (Ag) content of the adsorbed (ads) and calcium (Ca)-bound fraction. -9999, less than the reporting limit of 0.002.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.002</rdommin>
            <rdommax>0.009</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ag_hydr_Fe_Mn</attrlabl>
        <attrdef>Silver (Ag) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.019</rdommin>
            <rdommax>0.120</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ag_FeOx</attrlabl>
        <attrdef>Silver (Ag) content of the crystalline iron oxide (FeOx) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.004</rdommin>
            <rdommax>0.055</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ag_sulf</attrlabl>
        <attrdef>Silver (Ag) content of the sulfide (sulf) fraction. -9999, less than the reporting limit of 0.002.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.002</rdommin>
            <rdommax>0.055</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ag_resid</attrlabl>
        <attrdef>Silver (Ag) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.030</rdommin>
            <rdommax>0.382</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>As_total</attrlabl>
        <attrdef>Total arsenic (As) content determined by the four-acid digestion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.8</rdommin>
            <rdommax>14.0</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>As_ads_Ca</attrlabl>
        <attrdef>Arsenic (As) content of the adsorbed (ads) and calcium (Ca)-bound fraction. -9999, less than the reporting limit of 0.01.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.05</rdommin>
            <rdommax>1.14</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>As_hydr_Fe_Mn</attrlabl>
        <attrdef>Arsenic (As) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.06</rdommin>
            <rdommax>2.85</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>As_FeOx</attrlabl>
        <attrdef>Arsenic (As) content of the crystalline iron oxide (FeOx) fraction. -9999, less than the reporting limit of 0.01.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.02</rdommin>
            <rdommax>0.85</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>As_sulf</attrlabl>
        <attrdef>Arsenic (As) content of the sulfide (sulf) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.02</rdommin>
            <rdommax>11.20</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>As_resid</attrlabl>
        <attrdef>Arsenic (As) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.13</rdommin>
            <rdommax>2.05</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ba_total</attrlabl>
        <attrdef>Total barium (Ba) content determined by the four-acid digestion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>41</rdommin>
            <rdommax>1,320</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ba_ads_Ca</attrlabl>
        <attrdef>Baruim (Ba) content of the adsorbed (ads) and calcium (Ca)-bound fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>2.7</rdommin>
            <rdommax>98.0</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ba_hydr_Fe_Mn</attrlabl>
        <attrdef>Baruim (Ba) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>2.5</rdommin>
            <rdommax>195.0</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ba_FeOx</attrlabl>
        <attrdef>Baruim (Ba) content of the crystalline iron oxide (FeOx) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.4</rdommin>
            <rdommax>11.3</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ba_sulf</attrlabl>
        <attrdef>Baruim (Ba) content of the sulfide (sulf) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.8</rdommin>
            <rdommax>23.2</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ba_resid</attrlabl>
        <attrdef>Baruim (Ba) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>12</rdommin>
            <rdommax>1,090</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Be_total</attrlabl>
        <attrdef>Total beryllium (Be) content determined by the four-acid digestion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.11</rdommin>
            <rdommax>1.44</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Be_ads_Ca</attrlabl>
        <attrdef>Beryllium (Be) content of the adsorbed (ads) and calcium (Ca)-bound fraction. -9999, less than the reporting limit of 0.05.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.05</rdommin>
            <rdommax>0.11</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Be_hydr_Fe_Mn</attrlabl>
        <attrdef>Beryllium (Be) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction. -9999, less than the reporting limit of 0.05.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.05</rdommin>
            <rdommax>0.64</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Be_FeOx</attrlabl>
        <attrdef>Beryllium (Be) content of the crystalline iron oxide (FeOx) fraction. -9999, less than the reporting limit of 0.05.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.05</rdommin>
            <rdommax>0.09</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Be_sulf</attrlabl>
        <attrdef>Beryllium (Be) content of the sulfide (sulf) fraction. -9999, less than the reporting limit of 0.05.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.06</rdommin>
            <rdommax>0.16</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Be_resid</attrlabl>
        <attrdef>Beryllium (Be) content of the residual (resid) fraction. -9999, less than the reporting limit of 0.05.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.10</rdommin>
            <rdommax>0.35</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Bi_total</attrlabl>
        <attrdef>Total bismuth (Bi) content determined by the four-acid digestion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.01</rdommin>
            <rdommax>0.12</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Bi_ads_Ca</attrlabl>
        <attrdef>Bismuth (Bi) content of the adsorbed (ads) and calcium (Ca)-bound fraction. -9999, less than the reporting limit of 0.005.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.008</rdommin>
            <rdommax>0.012</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Bi_hydr_Fe_Mn</attrlabl>
        <attrdef>Bismuth (Bi) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction. -9999, less than the reporting limit of 0.005.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.007</rdommin>
            <rdommax>0.076</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Bi_FeOx</attrlabl>
        <attrdef>Bismuth (Bi) content of the crystalline iron oxide (FeOx) fraction. -9999, less than the reporting limit of 0.005.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.005</rdommin>
            <rdommax>0.029</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Bi_sulf</attrlabl>
        <attrdef>Bismuth (Bi) content of the sulfide (sulf) fraction. -9999, less than the reporting limit of 0.005.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.005</rdommin>
            <rdommax>0.028</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Bi_resid</attrlabl>
        <attrdef>Bismuth (Bi) content of the residual (resid) fraction. -9999, less than the reporting limit of 0.005.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.009</rdommin>
            <rdommax>0.010</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Cd_total</attrlabl>
        <attrdef>Total cadmium (Cd) content determined by the four-acid digestion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.04</rdommin>
            <rdommax>0.19</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Cd_ads_Ca</attrlabl>
        <attrdef>Cadmium (Cd) content of the adsorbed (ads) and calcium (Ca)-bound fraction. -9999, less than the reporting limit of 0.005.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.009</rdommin>
            <rdommax>0.056</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Cd_hydr_Fe_Mn</attrlabl>
        <attrdef>Cadmium (Cd) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.027</rdommin>
            <rdommax>0.164</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Cd_FeOx</attrlabl>
        <attrdef>Cadmium (Cd) content of the crystalline iron oxide (FeOx) fraction. -9999, less than the reporting limit of 0.005.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.005</rdommin>
            <rdommax>0.010</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Cd_sulf</attrlabl>
        <attrdef>Cadmium (Cd) content of the sulfide (sulf) fraction. -9999, less than the reporting limit of 0.005.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.005</rdommin>
            <rdommax>0.010</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Cd_resid</attrlabl>
        <attrdef>Cadmium (Cd) content of the residual (resid) fraction. -9999, less than the reporting limit of 0.005.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.005</rdommin>
            <rdommax>0.011</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ce_total</attrlabl>
        <attrdef>Total cerium (Ce) content determined by the sodium peroxide fusion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>4.4</rdommin>
            <rdommax>47.6</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ce_ads_Ca</attrlabl>
        <attrdef>Cerium (Ce) content of the adsorbed (ads) and calcium (Ca)-bound fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.05</rdommin>
            <rdommax>8.43</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ce_hydr_Fe_Mn</attrlabl>
        <attrdef>Cerium (Ce) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>2.23</rdommin>
            <rdommax>18.60</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ce_FeOx</attrlabl>
        <attrdef>Cerium (Ce) content of the crystalline iron oxide (FeOx) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.18</rdommin>
            <rdommax>2.45</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ce_sulf</attrlabl>
        <attrdef>Cerium (Ce) content of the sulfide (sulf) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.34</rdommin>
            <rdommax>3.17</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ce_resid</attrlabl>
        <attrdef>Cerium (Ce) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.96</rdommin>
            <rdommax>7.21</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Co_total</attrlabl>
        <attrdef>Total cobalt (Co) content determined by the four-acid digestion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>17.7</rdommin>
            <rdommax>384.0</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Co_ads_Ca</attrlabl>
        <attrdef>Cobalt (Co) content of the adsorbed (ads) and calcium (Ca)-bound fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.2</rdommin>
            <rdommax>7.2</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Co_hydr_Fe_Mn</attrlabl>
        <attrdef>Cobalt (Co) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>13.1</rdommin>
            <rdommax>391.0</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Co_FeOx</attrlabl>
        <attrdef>Cobalt (Co) content of the crystalline iron oxide (FeOx) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>1.4</rdommin>
            <rdommax>13.7</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Co_sulf</attrlabl>
        <attrdef>Cobalt (Co) content of the sulfide (sulf) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>4.1</rdommin>
            <rdommax>32.8</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Co_resid</attrlabl>
        <attrdef>Cobalt (Co) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>1.8</rdommin>
            <rdommax>13.0</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Cr_total</attrlabl>
        <attrdef>Total chromium (Cr) content determined by the sodium peroxide fusion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>97</rdommin>
            <rdommax>7,420</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Cr_ads_Ca</attrlabl>
        <attrdef>Chromium (Cr) content of the adsorbed (ads) and calcium (Ca)-bound fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>1</rdommin>
            <rdommax>7</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Cr_hydr_Fe_Mn</attrlabl>
        <attrdef>Chromium (Cr content of the hydrous iron (Fe) and manganese (Mn) oxide fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>13</rdommin>
            <rdommax>616</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Cr_FeOx</attrlabl>
        <attrdef>Chromium (Cr) content of the crystalline iron oxide (FeOx) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>6</rdommin>
            <rdommax>619</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Cr_sulf</attrlabl>
        <attrdef>Chromium (Cr) content of the sulfide (sulf) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>16</rdommin>
            <rdommax>1,780</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Cr_resid</attrlabl>
        <attrdef>Chromium (Cr) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>53</rdommin>
            <rdommax>3,800</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Cs_total</attrlabl>
        <attrdef>Total cesium (Cs) content determined by the four-acid digestion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.25</rdommin>
            <rdommax>1.60</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Cs_ads_Ca</attrlabl>
        <attrdef>Cesium (Cs) content of the adsorbed (ads) and calcium (Ca)-bound fraction. -9999, less than the reporting limit of 0.005.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.005</rdommin>
            <rdommax>0.070</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ce_hydr_Fe_Mn</attrlabl>
        <attrdef>Cesium (Cs) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.013</rdommin>
            <rdommax>0.069</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Cs_FeOx</attrlabl>
        <attrdef>Cesium (Cs) content of the crystalline iron oxide (FeOx) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.009</rdommin>
            <rdommax>0.061</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Cs_sulf</attrlabl>
        <attrdef>Cesium (Cs) content of the sulfide (sulf) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.031</rdommin>
            <rdommax>0.169</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Cs_resid</attrlabl>
        <attrdef>Cesium (Cs) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.113</rdommin>
            <rdommax>0.944</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Cu_total</attrlabl>
        <attrdef>Total copper (Cu) content determined by the four-acid digestion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>16.5</rdommin>
            <rdommax>109.0</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Cu_ads_Ca</attrlabl>
        <attrdef>Copper (Cu) content of the adsorbed (ads) and calcium (Ca)-bound fraction. -9999, less than the reporting limit of 0.005.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.126</rdommin>
            <rdommax>5.120</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ce_hydr_Fe_Mn</attrlabl>
        <attrdef>Cesium (Cs) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>5.74</rdommin>
            <rdommax>39.40</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Cs_FeOx</attrlabl>
        <attrdef>Cesium (Cs) content of the crystalline iron oxide (FeOx) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.37</rdommin>
            <rdommax>8.74</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Cs_sulf</attrlabl>
        <attrdef>Cesium (Cs) content of the sulfide (sulf) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>7.78</rdommin>
            <rdommax>31.40</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Cs_resid</attrlabl>
        <attrdef>Cesium (Cs) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>2.26</rdommin>
            <rdommax>22.90</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Dy_total</attrlabl>
        <attrdef>Total dysprosium (Dy) content determined by the sodium peroxide fusion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.38</rdommin>
            <rdommax>3.79</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Er_total</attrlabl>
        <attrdef>Total erbium (Er) content determined by the sodium peroxide fusion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.24</rdommin>
            <rdommax>2.34</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Eu_total</attrlabl>
        <attrdef>Total europium (Eu) content determined by the sodium peroxide fusion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.08</rdommin>
            <rdommax>1.47</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ga_total</attrlabl>
        <attrdef>Total gallium (Ga) content determined by the four-acid digestion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>2.48</rdommin>
            <rdommax>16.40</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ga_ads_Ca</attrlabl>
        <attrdef>Gallium (Ga) content of the adsorbed (ads) and calcium (Ca)-bound fraction. -9999, less than the reporting limit of 0.05.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.05</rdommin>
            <rdommax>0.07</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ga_hydr_Fe_Mn</attrlabl>
        <attrdef>Gallium (Ga) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.17</rdommin>
            <rdommax>1.58</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ga_FeOx</attrlabl>
        <attrdef>Gallium (Ga) content of the crystalline iron oxide (FeOx) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.07</rdommin>
            <rdommax>0.56</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ga_sulf</attrlabl>
        <attrdef>Gallium (Ga) content of the sulfide (sulf) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>1.52</rdommin>
            <rdommax>5.60</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ga_resid</attrlabl>
        <attrdef>Gallium (Ga) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>1.07</rdommin>
            <rdommax>8.90</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Gd_total</attrlabl>
        <attrdef>Total gadolinium (Gd) content determined by the sodium peroxide fusion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.42</rdommin>
            <rdommax>4.85</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ge_total</attrlabl>
        <attrdef>Total germanium (Ge) content determined by the sodium peroxide fusion method. -9999, less than the reporting limit of 1.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>1</rdommin>
            <rdommax>2</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ge_ads_Ca</attrlabl>
        <attrdef>Germanium (Ge) content of the adsorbed (ads) and calcium (Ca)-bound fraction. -9999, less than the reporting limit of 0.05.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>less than 0.05</rdommin>
            <rdommax>less than 0.05</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ge_hydr_Fe_Mn</attrlabl>
        <attrdef>Germanium (Ge) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction. -9999, less than the reporting limit of 0.05.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.05</rdommin>
            <rdommax>0.08</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ge_FeOx</attrlabl>
        <attrdef>Germanium (Ge) content of the crystalline iron oxide (FeOx) fraction. -9999, less than the reporting limit of 0.05.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>less than 0.05</rdommin>
            <rdommax>less than 0.05</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ge_sulf</attrlabl>
        <attrdef>Germanium (Ge) content of the sulfide (sulf) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.10</rdommin>
            <rdommax>0.50</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ge_resid</attrlabl>
        <attrdef>Germanium (Ge) content of the residual (resid) fraction. -9999, less than the reporting limit of 0.05.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>less than 0.05</rdommin>
            <rdommax>less than 0.05</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Hf_total</attrlabl>
        <attrdef>Total hafnium (Hf) content determined by the sodium peroxide fusion method. -9999, less than the reporting limit of 1.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>1</rdommin>
            <rdommax>3</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Hf_ads_Ca</attrlabl>
        <attrdef>Hafnium (Hf) content of the adsorbed (ads) and calcium (Ca)-bound fraction. -9999, less than the reporting limit of.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>less than 0.01</rdommin>
            <rdommax>less than 0.01</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Hf_hydr_Fe_Mn</attrlabl>
        <attrdef>Hafnium (Hf) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction. -9999, less than the reporting limit of.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.01</rdommin>
            <rdommax>0.08</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Hf_FeOx</attrlabl>
        <attrdef>Hafnium (Hf) content of the crystalline iron oxide (FeOx) fraction. -9999, less than the reporting limit of.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.01</rdommin>
            <rdommax>0.05</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Hf_sulf</attrlabl>
        <attrdef>Hafnium (Hf) content of the sulfide (sulf) fraction. -9999, less than the reporting limit of.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.10</rdommin>
            <rdommax>0.26</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Hf_resid</attrlabl>
        <attrdef>Hafnium (Hf) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.17</rdommin>
            <rdommax>2.58</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Hg_total</attrlabl>
        <attrdef>Total mercury (Hg) content determined by the cold vapor atomic absorption method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.022</rdommin>
            <rdommax>0.209</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Hg_ads_Ca</attrlabl>
        <attrdef>Mercury (Hg) content of the adsorbed (ads) and calcium (Ca)-bound fraction. -9999, less than the reporting limit of 0.01.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>less than 0.01</rdommin>
            <rdommax>less than 0.01</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Hg_hydr_Fe_Mn</attrlabl>
        <attrdef>Mercury (Hg) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction. -9999, less than the reporting limit of 0.01.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.01</rdommin>
            <rdommax>0.02</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Hg_FeOx</attrlabl>
        <attrdef>Mercury (Hg) content of the crystalline iron oxide (FeOx) fraction. -9999, less than the reporting limit of 0.01.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.01</rdommin>
            <rdommax>0.02</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Hg_sulf</attrlabl>
        <attrdef>Mercury (Hg) content of the sulfide (sulf) fraction. -9999, less than the reporting limit of 0.01.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.02</rdommin>
            <rdommax>0.15</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Hg_resid</attrlabl>
        <attrdef>Mercury (Hg) content of the residual (resid) fraction. -9999, less than the reporting limit of 0.01.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>less than 0.01</rdommin>
            <rdommax>less than 0.01</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ho_total</attrlabl>
        <attrdef>Total holmium (Ho) content determined by the sodium peroxide fusion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.08</rdommin>
            <rdommax>0.75</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>In_total</attrlabl>
        <attrdef>Total indium (In) content determined by the four-acid digestion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.013</rdommin>
            <rdommax>0.055</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>In_ads_Ca</attrlabl>
        <attrdef>Indium (In) content of the adsorbed (ads) and calcium (Ca)-bound fraction. -9999, less than the reporting limit of 0.005.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.005</rdommin>
            <rdommax>0.018</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>In_hydr_Fe_Mn</attrlabl>
        <attrdef>Indium (In) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction. -9999, less than the reporting limit of 0.005.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.005</rdommin>
            <rdommax>0.012</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>In_FeOx</attrlabl>
        <attrdef>Indium (In) content of the crystalline iron oxide (FeOx) fraction. -9999, less than the reporting limit of 0.005.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>less than 0.005</rdommin>
            <rdommax>less than 0.005</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>In_sulf</attrlabl>
        <attrdef>Indium (In) content of the sulfide (sulf) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.023</rdommin>
            <rdommax>0.066</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>In_resid</attrlabl>
        <attrdef>Indium (In) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.006</rdommin>
            <rdommax>0.034</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>La_total</attrlabl>
        <attrdef>Total lanthanum (La) content determined by the sodium peroxide fusion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>2.2</rdommin>
            <rdommax>25.4</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>La_ads_Ca</attrlabl>
        <attrdef>Lanthanum (La) content of the adsorbed (ads) and calcium (Ca)-bound fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.027</rdommin>
            <rdommax>3.540</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>La_hydr_Fe_Mn</attrlabl>
        <attrdef>Lanthanum (La) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.91</rdommin>
            <rdommax>8.51</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>La_FeOx</attrlabl>
        <attrdef>Lanthanum (La) content of the crystalline iron oxide (FeOx) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.108</rdommin>
            <rdommax>1.160</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>La_sulf</attrlabl>
        <attrdef>Lanthanum (La) content of the sulfide (sulf) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.191</rdommin>
            <rdommax>1.400</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>La_resid</attrlabl>
        <attrdef>Lanthanum (La) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.51</rdommin>
            <rdommax>4.61</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Li_total</attrlabl>
        <attrdef>Total lithium (Li) content determined by the four-acid digestion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>2.0</rdommin>
            <rdommax>44.5</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Li_ads_Ca</attrlabl>
        <attrdef>Lithium (Li) content of the adsorbed (ads) and calcium (Ca)-bound fraction. -9999, less than the reporting limit of 0.05.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.05</rdommin>
            <rdommax>1.99</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Li_hydr_Fe_Mn</attrlabl>
        <attrdef>Lithium (Li) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.18</rdommin>
            <rdommax>10.00</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Li_FeOx</attrlabl>
        <attrdef>Lithium (Li) content of the crystalline iron oxide (FeOx) fraction. -9999, less than the reporting limit of 0.05.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.05</rdommin>
            <rdommax>3.12</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Li_sulf</attrlabl>
        <attrdef>Lithium (Li) content of the sulfide (sulf) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.58</rdommin>
            <rdommax>7.31</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Li_resid</attrlabl>
        <attrdef>Lithium (Li) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>1.28</rdommin>
            <rdommax>16.40</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Lu</attrlabl>
        <attrdef>Total lutetium (Lu) content determined by the sodium peroxide fusion method. -9999, less than the reporting limit of 0.05.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.08</rdommin>
            <rdommax>0.31</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Mn_total</attrlabl>
        <attrdef>Total manganese (Mn) content determined by the four-acid digestion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>557</rdommin>
            <rdommax>3,210</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Mn_ads_Ca</attrlabl>
        <attrdef>Manganese (Mn) content of the adsorbed (ads) and calcium (Ca)-bound fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>31</rdommin>
            <rdommax>410</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Mn_hydr_Fe_Mn</attrlabl>
        <attrdef>Manganese (Mn) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>143</rdommin>
            <rdommax>2,550</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Mn_FeOx</attrlabl>
        <attrdef>Manganese (Mn) content of the crystalline iron oxide (FeOx) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>16</rdommin>
            <rdommax>150</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Mn_sulf</attrlabl>
        <attrdef>Manganese (Mn) content of the sulfide (sulf) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>33</rdommin>
            <rdommax>224</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Mn_resid</attrlabl>
        <attrdef>Manganese (Mn) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>46</rdommin>
            <rdommax>518</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Mo_total</attrlabl>
        <attrdef>Total molybdenum (Mo) content determined by the four-acid digestion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.25</rdommin>
            <rdommax>1.80</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Mo_ads_Ca</attrlabl>
        <attrdef>Molybdenum (Mo) content of the adsorbed (ads) and calcium (Ca)-bound fraction. -9999, less than the reporting limit of 0.005.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.006</rdommin>
            <rdommax>0.203</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Mo_hydr_Fe_Mn</attrlabl>
        <attrdef>Molybdenum (Mo) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction. -9999, less than the reporting limit of 0.005.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.016</rdommin>
            <rdommax>0.298</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Mo_FeOx</attrlabl>
        <attrdef>Molybdenum (Mo) content of the crystalline iron oxide (FeOx) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.043</rdommin>
            <rdommax>0.243</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Mo_sulf</attrlabl>
        <attrdef>Molybdenum (Mo) content of the sulfide (sulf) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.105</rdommin>
            <rdommax>1.430</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Mo_resid</attrlabl>
        <attrdef>Molybdenum (Mo) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.112</rdommin>
            <rdommax>0.282</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Nb_total</attrlabl>
        <attrdef>Total niobium (Nb) content determined by the four-acid digestion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.8</rdommin>
            <rdommax>15.9</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Nb_ads_Ca</attrlabl>
        <attrdef>Niobium (Nb) content of the adsorbed (ads) and calcium (Ca)-bound fraction. -9999, less than the reporting limit of 0.01.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.01</rdommin>
            <rdommax>0.02</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Nb_hydr_Fe_Mn</attrlabl>
        <attrdef>Niobium (Nb) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction. -9999, less than the reporting limit of 0.01.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.01</rdommin>
            <rdommax>0.05</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Nb_FeOx</attrlabl>
        <attrdef>Niobium (Nb) content of the crystalline iron oxide (FeOx) fraction. -9999, less than the reporting limit of 0.01.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.06</rdommin>
            <rdommax>0.48</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Nb_sulf</attrlabl>
        <attrdef>Niobium (Nb) content of the sulfide (sulf) fraction. -9999, less than the reporting limit of 0.01.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.02</rdommin>
            <rdommax>1.10</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Nb_resid</attrlabl>
        <attrdef>Niobium (Nb) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.84</rdommin>
            <rdommax>15.80</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Nd_total</attrlabl>
        <attrdef>Total neodymium (Nd) content determined by the sodium peroxide fusion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>1.8</rdommin>
            <rdommax>21.7</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ni_total</attrlabl>
        <attrdef>Total nickel (Ni) content determined by the four-acid digestion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>38</rdommin>
            <rdommax>4,710</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ni_ads_Ca</attrlabl>
        <attrdef>Nickel (Ni) content of the adsorbed (ads) and calcium (Ca)-bound fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.4</rdommin>
            <rdommax>198.0</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ni_hydr_Fe_Mn</attrlabl>
        <attrdef>Nickel (Ni) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>18</rdommin>
            <rdommax>2,500</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ni_FeOx</attrlabl>
        <attrdef>Nickel (Ni) content of the crystalline iron oxide (FeOx) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>4</rdommin>
            <rdommax>537</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ni_sulf</attrlabl>
        <attrdef>Nickel (Ni) content of the sulfide (sulf) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>9</rdommin>
            <rdommax>1,030</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ni_resid</attrlabl>
        <attrdef>Nickel (Ni) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>8</rdommin>
            <rdommax>690</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Pb_total</attrlabl>
        <attrdef>Total lead (Pb) content determined by the four-acid digestion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>4.0</rdommin>
            <rdommax>17.1</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Pb_ads_Ca</attrlabl>
        <attrdef>Lead (Pb) content of the adsorbed (ads) and calcium (Ca)-bound fraction. -9999, less than the reporting limit of 0.05.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.06</rdommin>
            <rdommax>6.52</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Pb_hydr_Fe_Mn</attrlabl>
        <attrdef>Lead (Pb) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>2.44</rdommin>
            <rdommax>13.20</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Pb_FeOx</attrlabl>
        <attrdef>Lead (Pb) content of the crystalline iron oxide (FeOx) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.27</rdommin>
            <rdommax>1.29</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Pb_sulf</attrlabl>
        <attrdef>Lead (Pb) content of the sulfide (sulf) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.28</rdommin>
            <rdommax>1.91</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Pb_resid</attrlabl>
        <attrdef>Lead (Pb) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.32</rdommin>
            <rdommax>1.40</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Pr_total</attrlabl>
        <attrdef>Total praseodymium (Pr) content determined by the sodium peroxide fusion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.47</rdommin>
            <rdommax>5.19</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Rb_total</attrlabl>
        <attrdef>Total rubidium (Rb) content determined by the four-acid digestion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>3.8</rdommin>
            <rdommax>39.8</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Rb_ads_Ca</attrlabl>
        <attrdef>Rubidium (Rb) content of the adsorbed (ads) and calcium (Ca)-bound fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.077</rdommin>
            <rdommax>0.634</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Rb_hydr_Fe_Mn</attrlabl>
        <attrdef>Rubidium (Rb) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.494</rdommin>
            <rdommax>3.170</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Rb_FeOx</attrlabl>
        <attrdef>Rubidium (Rb) content of the crystalline iron oxide (FeOx) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.111</rdommin>
            <rdommax>1.790</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Rb_sulf</attrlabl>
        <attrdef>Rubidium (Rb) content of the sulfide (sulf) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.445</rdommin>
            <rdommax>4.020</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Rb_resid</attrlabl>
        <attrdef>Rubidium (Rb) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>2.74</rdommin>
            <rdommax>35.60</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Sb_total</attrlabl>
        <attrdef>Total antimony (Sb) content determined by the four-acid digestion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.12</rdommin>
            <rdommax>0.67</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Sb_ads_Ca</attrlabl>
        <attrdef>Antimony (Sb) content of the adsorbed (ads) and calcium (Ca)-bound fraction. -9999, less than the reporting limit of 0.001.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.002</rdommin>
            <rdommax>0.009</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Sb_hydr_Fe_Mn</attrlabl>
        <attrdef>Antimony (Sb) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction. -9999, less than the reporting limit of 0.001.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.001</rdommin>
            <rdommax>0.026</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Sb_FeOx</attrlabl>
        <attrdef>Antimony (Sb) content of the crystalline iron oxide (FeOx) fraction. -9999, less than the reporting limit of 0.001.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.001</rdommin>
            <rdommax>0.018</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Sb_sulf</attrlabl>
        <attrdef>Antimony (Sb) content of the sulfide (sulf) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.003</rdommin>
            <rdommax>0.205</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Sb_resid</attrlabl>
        <attrdef>Antimony (Sb) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.068</rdommin>
            <rdommax>0.453</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Sc_total</attrlabl>
        <attrdef>Total scandium (Sc) content determined by the four-acid digestion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>9.4</rdommin>
            <rdommax>33.7</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Sc_ads_Ca</attrlabl>
        <attrdef>Scandium (Sc) content of the adsorbed (ads) and calcium (Ca)-bound fraction. -9999, less than the reporting limit of 0.1.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.2</rdommin>
            <rdommax>0.8</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Sc_hydr_Fe_Mn</attrlabl>
        <attrdef>Scandium (Sc) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction. -9999, less than the reporting limit of 0.1.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.1</rdommin>
            <rdommax>1.1</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Sc_FeOx</attrlabl>
        <attrdef>Scandium (Sc) content of the crystalline iron oxide (FeOx) fraction. -9999, less than the reporting limit of 0.1.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.1</rdommin>
            <rdommax>1.7</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Sc_sulf</attrlabl>
        <attrdef>Scandium (Sc) content of the sulfide (sulf) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>3.9</rdommin>
            <rdommax>16.5</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Sc_resid</attrlabl>
        <attrdef>Scandium (Sc) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>5.1</rdommin>
            <rdommax>13.0</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Se_total</attrlabl>
        <attrdef>Total selenium (Se) content determined by the four-acid digestion method. -1111, value did not meet quality control criteria described in the Attribute Accuracy Report; -9999, less than the reporting limit of 0.005.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.5</rdommin>
            <rdommax>0.7</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Se_ads_Ca</attrlabl>
        <attrdef>Selenium (Se) content of the adsorbed (ads) and calcium (Ca)-bound fraction. -9999, less than the reporting limit of 0.005.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.009</rdommin>
            <rdommax>0.287</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Se_hydr_Fe_Mn</attrlabl>
        <attrdef>Selenium (Se) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction. -9999, less than the reporting limit of 0.005.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.038</rdommin>
            <rdommax>0.197</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Se_FeOx</attrlabl>
        <attrdef>Selenium (Se) content of the crystalline iron oxide (FeOx) fraction. -9999, less than the reporting limit of 0.005.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.021</rdommin>
            <rdommax>0.179</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Se_sulf</attrlabl>
        <attrdef>Selenium (Se) content of the sulfide (sulf) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.311</rdommin>
            <rdommax>0.900</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Se_resid</attrlabl>
        <attrdef>Selenium (Se) content of the residual (resid) fraction. -9999, less than the reporting limit of 0.005.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.063</rdommin>
            <rdommax>0.438</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Sm_total</attrlabl>
        <attrdef>Total samarium (Sm) content determined by the sodium peroxide fusion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.4</rdommin>
            <rdommax>4.5</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Sn_total</attrlabl>
        <attrdef>Total tin (Sn) content determined by the four-acid digestion method. -9999, less than the reporting limit of 1.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>1</rdommin>
            <rdommax>12</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Sn_ads_Ca</attrlabl>
        <attrdef>Tin (Sn) content of the adsorbed (ads) and calcium (Ca)-bound fraction. -9999, less than the reporting limit of 0.005.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.007</rdommin>
            <rdommax>0.415</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Sn_hydr_Fe_Mn</attrlabl>
        <attrdef>Tin (Sn) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction. -9999, less than the reporting limit of 0.005.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.007</rdommin>
            <rdommax>0.041</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Sn_FeOx</attrlabl>
        <attrdef>Tin (Sn) content of the crystalline iron oxide (FeOx) fraction. -9999, less than the reporting limit of 0.005.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.005</rdommin>
            <rdommax>0.211</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Sn_sulf</attrlabl>
        <attrdef>Tin (Sn) content of the sulfide (sulf) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.213</rdommin>
            <rdommax>9.090</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Sn_resid</attrlabl>
        <attrdef>Tin (Sn) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.191</rdommin>
            <rdommax>2.860</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Sr_total</attrlabl>
        <attrdef>Total strontium (Sr) content determined by the four-acid digestion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>14</rdommin>
            <rdommax>2,380</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Sr_ads_Ca</attrlabl>
        <attrdef>Strontium (Sr) content of the adsorbed (ads) and calcium (Ca)-bound fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>4.2</rdommin>
            <rdommax>1,860.0</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Sr_hydr_Fe_Mn</attrlabl>
        <attrdef>Strontium (Sr) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>1.65</rdommin>
            <rdommax>276.00</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Sr_FeOx</attrlabl>
        <attrdef>Strontium (Sr) content of the crystalline iron oxide (FeOx) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.33</rdommin>
            <rdommax>5.56</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Sr_sulf</attrlabl>
        <attrdef>Strontium (Sr) content of the sulfide (sulf) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.31</rdommin>
            <rdommax>30.90</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Sr_resid</attrlabl>
        <attrdef>Strontium (Sr) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>6</rdommin>
            <rdommax>288</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ta_total</attrlabl>
        <attrdef>Total tantalum (Ta) content determined by the four-acid digestion method. -9999, less than the reporting limit of 0.05.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.05</rdommin>
            <rdommax>1.08</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ta_ads_Ca</attrlabl>
        <attrdef>Tantalum (Ta) content of the adsorbed (ads) and calcium (Ca)-bound fraction. -9999, less than the reporting limit of 0.01.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>less than 0.01</rdommin>
            <rdommax>less than 0.01</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ta_hydr_Fe_Mn</attrlabl>
        <attrdef>Tantalum (Ta) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction. -9999, less than the reporting limit of 0.01.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>less than 0.01</rdommin>
            <rdommax>less than 0.01</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ta_FeOx</attrlabl>
        <attrdef>Tantalum (Ta) content of the crystalline iron oxide (FeOx) fraction. -9999, less than the reporting limit of 0.01.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>less than 0.01</rdommin>
            <rdommax>less than 0.01</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ta_sulf</attrlabl>
        <attrdef>Tantalum (Ta) content of the sulfide (sulf) fraction. -9999, less than the reporting limit of 0.01.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.01</rdommin>
            <rdommax>0.01</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Ta_resid</attrlabl>
        <attrdef>Tantalum (Ta) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.06</rdommin>
            <rdommax>1.21</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Tb_total</attrlabl>
        <attrdef>Total terbium (Tb) content determined by the sodium peroxide fusion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.05</rdommin>
            <rdommax>0.71</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Te_total</attrlabl>
        <attrdef>Total tellurium (Te) content determined by the four-acid digestion method. -9999, less than the reporting limit of 0.01.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.01</rdommin>
            <rdommax>0.06</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Te_ads_Ca</attrlabl>
        <attrdef>Tellurium (Te) content of the adsorbed (ads) and calcium (Ca)-bound fraction. -9999, less than the reporting limit of 0.01.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.01</rdommin>
            <rdommax>0.01</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Te_hydr_Fe_Mn</attrlabl>
        <attrdef>Tellurium (Te) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction. -9999, less than the reporting limit of 0.01.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>less than 0.01</rdommin>
            <rdommax>less than 0.01</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Te_FeOx</attrlabl>
        <attrdef>Tellurium (Te) content of the crystalline iron oxide (FeOx) fraction. -9999, less than the reporting limit of 0.01.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>less than 0.01</rdommin>
            <rdommax>less than 0.01</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Te_sulf</attrlabl>
        <attrdef>Tellurium (Te) content of the sulfide (sulf) fraction. -9999, less than the reporting limit of 0.01.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.01</rdommin>
            <rdommax>0.06</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Te_resid</attrlabl>
        <attrdef>Tellurium (Te) content of the residual (resid) fraction. -9999, less than the reporting limit of 0.01.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.01</rdommin>
            <rdommax>0.02</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Th_total</attrlabl>
        <attrdef>Total thorium (Th) content determined by the sodium peroxide fusion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.5</rdommin>
            <rdommax>3.5</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Th_ads_Ca</attrlabl>
        <attrdef>Thorium (Th) content of the adsorbed (ads) and calcium (Ca)-bound fraction. -9999, less than the reporting limit of 0.1.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.1</rdommin>
            <rdommax>0.1</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Th_hydr_Fe_Mn</attrlabl>
        <attrdef>Thorium (Th) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction. -9999, less than the reporting limit of 0.1.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>less than 0.1</rdommin>
            <rdommax>less than 0.1</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Th_FeOx</attrlabl>
        <attrdef>Thorium (Th) content of the crystalline iron oxide (FeOx) fraction. -9999, less than the reporting limit of 0.1.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>less than 0.1</rdommin>
            <rdommax>less than 0.1</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Th_sulf</attrlabl>
        <attrdef>Thorium (Th) content of the sulfide (sulf) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.2</rdommin>
            <rdommax>1.8</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Th_resid</attrlabl>
        <attrdef>Thorium (Th) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.2</rdommin>
            <rdommax>1.6</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Tl_total</attrlabl>
        <attrdef>Total thallium (Tl) content determined by the four-acid digestion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.02</rdommin>
            <rdommax>0.20</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Tl_ads_Ca</attrlabl>
        <attrdef>Thallium (Tl) content of the adsorbed (ads) and calcium (Ca)-bound fraction. -9999, less than the reporting limit of 0.005.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>less than 0.005</rdommin>
            <rdommax>less than 0.005</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Tl_hydr_Fe_Mn</attrlabl>
        <attrdef>Thallium (Tl) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.005</rdommin>
            <rdommax>0.051</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Tl_FeOx</attrlabl>
        <attrdef>Thallium (Tl) content of the crystalline iron oxide (FeOx) fraction. -9999, less than the reporting limit of 0.005.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.041</rdommin>
            <rdommax>0.059</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Tl_sulf</attrlabl>
        <attrdef>Thallium (Tl) content of the sulfide (sulf) fraction. -9999, less than the reporting limit of 0.005.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.006</rdommin>
            <rdommax>0.084</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Tl_resid</attrlabl>
        <attrdef>Thallium (Tl) content of the residual (resid) fraction. -9999, less than the reporting limit of 0.005.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.006</rdommin>
            <rdommax>0.105</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Tm_total</attrlabl>
        <attrdef>Total thullium (Tm) content determined by the sodium peroxide fusion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.07</rdommin>
            <rdommax>0.31</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>U_total</attrlabl>
        <attrdef>Total uranium (U) content determined by the sodium peroxide fusion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.16</rdommin>
            <rdommax>2.56</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>U_ads_Ca</attrlabl>
        <attrdef>Uranium (U) content of the adsorbed (ads) and calcium (Ca)-bound fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.024</rdommin>
            <rdommax>1.350</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>U_hydr_Fe_Mn</attrlabl>
        <attrdef>Uranium (U) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.035</rdommin>
            <rdommax>0.406</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>U_FeOx</attrlabl>
        <attrdef>Uranium (U) content of the crystalline iron oxide (FeOx) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.013</rdommin>
            <rdommax>0.112</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>U_sulf</attrlabl>
        <attrdef>Uranium (U) content of the sulfide (sulf) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.017</rdommin>
            <rdommax>0.355</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>U_resid</attrlabl>
        <attrdef>Uranium (U) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.066</rdommin>
            <rdommax>0.475</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.001</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>V_total</attrlabl>
        <attrdef>Total vanadium (V) content determined by the four-acid digestion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>51</rdommin>
            <rdommax>236</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>V_ads_Ca</attrlabl>
        <attrdef>Vanadium (V) content of the adsorbed (ads) and calcium (Ca)-bound fraction. -9999, less than the reporting limit of 0.05.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.08</rdommin>
            <rdommax>3.45</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>V_hydr_Fe_Mn</attrlabl>
        <attrdef>Vanadium (V) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>12.1</rdommin>
            <rdommax>59.2</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>V_FeOx</attrlabl>
        <attrdef>Vanadium (V) content of the crystalline iron oxide (FeOx) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>2.4</rdommin>
            <rdommax>29.7</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>V_sulf</attrlabl>
        <attrdef>Vanadium (V) content of the sulfide (sulf) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>12.5</rdommin>
            <rdommax>61.5</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>V_resid</attrlabl>
        <attrdef>Vanadium (V) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>15.0</rdommin>
            <rdommax>113.0</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>W_total</attrlabl>
        <attrdef>Total tungsten (W) content determined by the four-acid digestion method. -9999, less than the reporting limit of 0.1.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.2</rdommin>
            <rdommax>0.4</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>W_ads_Ca</attrlabl>
        <attrdef>Tungsten (W) content of the adsorbed (ads) and calcium (Ca)-bound fraction. -9999, less than the reporting limit of 0.01.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>less than 0.01</rdommin>
            <rdommax>less than 0.01</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>W_hydr_Fe_Mn</attrlabl>
        <attrdef>Tungsten (W) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction. -9999, less than the reporting limit of 0.01.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.01</rdommin>
            <rdommax>0.02</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>W_FeOx</attrlabl>
        <attrdef>Tungsten (W) content of the crystalline iron oxide (FeOx) fraction. -9999, less than the reporting limit of 0.01.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.01</rdommin>
            <rdommax>0.02</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>W_sulf</attrlabl>
        <attrdef>Tungsten (W) content of the sulfide (sulf) fraction. -9999, less than the reporting limit of 0.01.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.01</rdommin>
            <rdommax>0.19</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>W_resid</attrlabl>
        <attrdef>Tungsten (W) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.04</rdommin>
            <rdommax>0.39</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Y_total</attrlabl>
        <attrdef>Total yttrium (Y) content determined by the sodium peroxide fusion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>2.1</rdommin>
            <rdommax>19.7</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Y_ads_Ca</attrlabl>
        <attrdef>Yttrium (Y) content of the adsorbed (ads) and calcium (Ca)-bound fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.05</rdommin>
            <rdommax>4.58</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Y_hydr_Fe_Mn</attrlabl>
        <attrdef>Yttrium (Y) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>1.04</rdommin>
            <rdommax>9.00</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Y_FeOx</attrlabl>
        <attrdef>Yttrium (Y) content of the crystalline iron oxide (FeOx) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.10</rdommin>
            <rdommax>1.06</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Y_sulf</attrlabl>
        <attrdef>Yttrium (Y) content of the sulfide (sulf) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.31</rdommin>
            <rdommax>2.01</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Y_resid</attrlabl>
        <attrdef>Yttrium (Y) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.52</rdommin>
            <rdommax>3.92</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Yb_total</attrlabl>
        <attrdef>Total ytterbium (Yb) content determined by the sodium peroxide fusion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.2</rdommin>
            <rdommax>2.1</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Zn_total</attrlabl>
        <attrdef>Total zinc (Zn) content determined by the four-acid digestion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>35.4</rdommin>
            <rdommax>118.0</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Zn_ads_Ca</attrlabl>
        <attrdef>Zinc (Zn) content of the adsorbed (ads) and calcium (Ca)-bound fraction. -9999, less than the reporting limit of 0.1.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.3</rdommin>
            <rdommax>6.1</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Zn_hydr_Fe_Mn</attrlabl>
        <attrdef>Zinc (Zn) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>17.5</rdommin>
            <rdommax>63.2</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Zn_FeOx</attrlabl>
        <attrdef>Zinc (Zn) content of the crystalline iron oxide (FeOx) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>2.0</rdommin>
            <rdommax>10.0</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Zn_sulf</attrlabl>
        <attrdef>Zinc (Zn) content of the sulfide (sulf) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>4.1</rdommin>
            <rdommax>20.8</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Zn_resid</attrlabl>
        <attrdef>Zinc (Zn) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>8.7</rdommin>
            <rdommax>72.5</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Zr_total</attrlabl>
        <attrdef>Total zirconium (Zr) content determined by the sodium peroxide fusion method.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>8.0</rdommin>
            <rdommax>127.0</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Zn_ads_Ca</attrlabl>
        <attrdef>Zinc (Zn) content of the adsorbed (ads) and calcium (Ca)-bound fraction. -9999, less than the reporting limit of 0.05.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.05</rdommin>
            <rdommax>0.20</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Zn_hydr_Fe_Mn</attrlabl>
        <attrdef>Zinc (Zn) content of the hydrous iron (Fe) and manganese (Mn) oxide fraction. -9999, less than the reporting limit of 0.05.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.06</rdommin>
            <rdommax>2.60</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Zn_FeOx</attrlabl>
        <attrdef>Zinc (Zn) content of the crystalline iron oxide (FeOx) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.09</rdommin>
            <rdommax>2.90</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Zn_sulf</attrlabl>
        <attrdef>Zinc (Zn) content of the sulfide (sulf) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>0.16</rdommin>
            <rdommax>8.47</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.01</attrmres>
          </rdom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Zn_resid</attrlabl>
        <attrdef>Zinc (Zn) content of the residual (resid) fraction.</attrdef>
        <attrdefs>Producer defined</attrdefs>
        <attrdomv>
          <rdom>
            <rdommin>6.8</rdommin>
            <rdommax>138.0</rdommax>
            <attrunit>milligram per kilogram (mg/kg)</attrunit>
            <attrmres>0.1</attrmres>
          </rdom>
        </attrdomv>
      </attr>
    </detailed>
    <overview>
      <eaover>The first line of the csv file is a header line.</eaover>
      <eadetcit>U.S. Geological Survey</eadetcit>
    </overview>
  </eainfo>
  <distinfo>
    <distrib>
      <cntinfo>
        <cntorgp>
          <cntorg>U.S. Geological Survey - ScienceBase</cntorg>
        </cntorgp>
        <cntaddr>
          <addrtype>mailing and physical</addrtype>
          <address>Denver Federal Center, Building 810, Mail Stop 302</address>
          <city>Denver</city>
          <state>CO</state>
          <postal>80225</postal>
        </cntaddr>
        <cntvoice>1-888-275-8747</cntvoice>
        <cntemail>sciencebase@usgs.gov</cntemail>
      </cntinfo>
    </distrib>
    <resdesc>These data are available in csv format (SouthwestPuertoRicoSedimentExtractions_data.csv) contained in a single zip file which also includes CSDGM FGDC compliant metadata.</resdesc>
    <distliab>Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.</distliab>
    <stdorder>
      <digform>
        <digtinfo>
          <formname>comma-delimited text</formname>
          <formcont>Zip file contains the csv table and the associated metadata.</formcont>
          <filedec>No compression applied.</filedec>
          <transize>0.04</transize>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>https://www.sciencebase.gov/catalog/item/614e30d0d34e0df5fb98a12f</networkr>
                <networkr>https://doi.org/10.5066/P9MN33MB</networkr>
              </networka>
            </computer>
            <accinstr>Data can be downloaded using the Network_Resource_Name links. The first link is a direct link to download the zipped file of data and metadata. The second link points to a landing page with metadata and data</accinstr>
          </onlinopt>
        </digtopt>
      </digform>
      <fees>None.</fees>
    </stdorder>
    <techpreq>These data can be viewed with any text reader.</techpreq>
  </distinfo>
  <metainfo>
    <metd>20220726</metd>
    <metc>
      <cntinfo>
        <cntorgp>
          <cntorg>U.S. Geological Survey, Pacific Coastal and Marine Science Center</cntorg>
          <cntper>PCMSC Science Data Coordinator</cntper>
        </cntorgp>
        <cntaddr>
          <addrtype>mailing and physical</addrtype>
          <address>2885 Mission Street</address>
          <city>Santa Cruz</city>
          <state>CA</state>
          <postal>95060</postal>
        </cntaddr>
        <cntvoice>831-427-4747</cntvoice>
        <cntemail>pcmsc_data@usgs.gov</cntemail>
      </cntinfo>
    </metc>
    <metstdn>Content Standard for Digital Geospatial Metadata</metstdn>
    <metstdv>FGDC-STD-001-1998</metstdv>
  </metainfo>
</metadata>
