Kira Mizell
20230125
Major and trace element geochemistry of ferromanganese crusts from seamounts within the Tuvalu Exclusive Economic Zone
comma-delimited text
data release
DOI: 10.5066/P95CIHSU
Pacific Coastal and Marine Science Center, Santa Cruz, California
U.S. Geological Survey
https://doi.org/10.5066/P95CIHSU
Kira Mizell
2023
Major and trace element geochemistry and mineralogy of ferromanganese crusts from seamounts within the Tuvalu Exclusive Economic Zone
data release
DOI:10.5066/P95CIHSU
Pacific Coastal and Marine Science Center, Santa Cruz, California
U.S. Geological Survey
https://doi.org/10.5066/P95CIHSU
Ferromanganese crusts were collected via dredge from seamounts within the Tuvalu Exclusive Economic Zone in the Pacific Ocean during cruise RR1310 funded by the National Science Foundation aboard the R/V Roger Revelle in 2013. USGS scientists requested these ferromanganese crust samples from the Oregon State University Marine and Geology Repository where they had been archived. Ferromanganese crust samples were sent to USGS for subsampling and major and trace element geochemical analyses. Major and trace element data and thickness for the ferromanganese crusts as well as location information (latitude, longitude, depth) for each sample are provided here.
These data serve to expand the knowledge and statistics for deep ocean marine mineral occurrences and composition within the global ocean.
Samples analyzed for this data release were collected on a cruise funded by National Science Foundation grant #1154070. All metadata associated with cruise RR1310 is available upon request from the Oregon State University Marine and Geology Repository (http://osu-mgr.org).
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
20130722
20211223
Date that the last process step was completed
None planned
-176.7556
172.7104
-3.9656
-13.2404
ISO 19115 Topic Category
oceans
geoscientificInformation
Data Categories for Marine Planning
Nonliving Resources
Material Resources
Mineral Resources
Physical/Chemical Features
Assessments
USGS Thesaurus
dredge sampling
chemical analysis
mass spectroscopy
geochemistry
metallic mineral resources
Marine Realms Information Bank (MRIB) keywords
sediment geochemistry
mineral resources
chemical analysis
None
U.S. Geological Survey
USGS
Coastal and Marine Hazards and Resources Program
CMHRP
Pacific Coastal and Marine Science Center
PCMSC
Global Ocean Mineral Resources
USGS Metadata Identifier
USGS:63b6512ed34e92aad3cacaf8
Geographic Names Information System (GNIS)
Pacific Ocean
NGA GEOnet Names Server (GNS)
Tuvalu
None
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 of the dataset and in products derived from these data.
U.S. Geological Survey, Pacific Coastal and Marine Science Center
PCMSC Science Data Coordinator
mailing and physical
2885 Mission Street
Santa Cruz
CA
95060
831-427-4747
pcmsc_data@usgs.gov
Mac OSX 11.6.1, Microsoft Excel 16.47.1 for Mac
All geochemistry data were calibrated against certified reference materials. The instruments and techniques used to generate the geochemical data are included in the data table and also summarized below in the Source Citations since data were generated by commercial laboratories. Limits for each analyte's detection by an instrument are reported in the table. The value -8888 indicates that the measurement for an analyte was below the detection limit and the value -7777 indicates that the measurement for an analyte was above the detection limit. Values of -9999 indicate that no analysis was performed.
No formal logical accuracy tests were conducted.
Dataset is considered complete for the information presented, as described in the abstract. Many samples do not have chemistry data because analyses were performed on representative samples only. Users are advised to read the rest of the metadata record carefully for additional details.
A formal accuracy assessment of the horizontal positional information in the dataset has not been conducted. The horizontal accuracy was determined with the ship's GPS navigation, which is accurate to less than 5 m.
The singular value for water depth for each sample was calculated from shipboard dredge log records to account for ship-based depth soundings, the length of dredge wire out, movement by the ship, approximate seamount slope, and multiple bites of the dredge along each dredge track in order to maximize location accuracy. A formal accuracy assessment of the vertical positional information in the dataset has not been conducted.
SGS Minerals Laboratory
2017
Geochemical Element Analysis
https://www.sgs.ca/en/mining/analytical-services/geochemistry
geochemical analyses
20170612
20170928
Date range during which official lab reports were released by SGS Minerals Laboratory
geochemistry
Fe, Mn, Si, Al, Ca, Mg, K, Na, P, Ti, and LOI were determined by X-Ray Fluorescence (XRF) on borate fused disks; Co, Mo, Nb, Ni, Rb, U, V, W, Zr, and Rare Earth Elements (La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) and Y (REY) were determined by Inductively Coupled Plasma Mass Spectrometry (ICP-MS) using lithium-metaborate fused disks; Ag, As, Be, Bi, Cd, Cs, Hf, In, Pb, Sb, Sc, Se, Sn, Ta, Th, Tl were determined by ICP-MS and Ba, Cr, Cu, Li, S, Sr and Zn by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES) following a four-acid digest (hydrochloric, hydrofluoric, nitric, perchloric acids); Te was determined by hydride generation and graphite furnace Atomic-Absorption Spectrometry (AAS); Hg by cold vapor atomic absorption spectroscopy (CVAA); H2O- by gravimetric analysis, H2O+ by penfield-infrared; Cl and F by ion-selective electrode; carbon dioxide by coulometry.
Intertek
2017
Platinum Group Element Analysis
https://www.intertek.com/minerals/precious-metals-analysis/
geochemical analyses
20170824
Date that official lab report was released by Intertek
PGE data
Platinum group elements (PGE; Au, Ir, Os, Pd, Pt, Rh, Ru) were determined by fire assay nickel sulfide collection and Inductively Coupled Plasma Mass Spectrometry (ICP-MS)
USGS scientists requested these ferromanganese crust samples from the Oregon State University Marine and Geology Repository where they had been archived. Ferromanganese crust samples were sent to USGS for subsampling and major and trace element geochemical analyses.
20160926
At USGS, bulk portions or individual layers were sampled from the ferromanganese crusts using a ceramic knife and then ground using an agate mortar and pestle to approximately 75 micrometers. Powdered samples were then sent by USGS to commercial analytical labs, SGS and Intertek. See Source Citations for information on geochemical techniques.
20170501
Total rare earth elements plus yttrium (Total_REY) were calculated by summing the concentration of rare earth elements (La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) plus Y in each sample. Percentage of the heavy rare earth elements was calculated by taking the sum of heavy rare earth elements (Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu) and Y and dividing the sum by the Total_REY value for each sample.
geochemistry
20181101
Results from the lab analyses, detection limits, analytical method information, location data, and sample information were combined into a comma-delimited text values document (Tuvalu_RR1310_FeMn_geochem_data.csv).
geochemistry
20190801
Point
Point
55
0.001
0.001
Decimal degrees
D_WGS_1984
WGS_1984
6378137.0
298.257222101
Tuvalu_RR1310_FeMn_geochem_data.csv
Comma-delimited file containing results from geochemical analyses of ferromanganese crusts at the latitude, longitude, and water depth of each sample location.
Producer defined
Sample_ID
The sample and dredge ID for each sample
Originally defined onboard ship during the cruise by cruise participants. For several samples, IDs were updated by USGS.
The sample names include the dredge number (D, denoting dredge, followed by a number) and a further underscored number to denote the sample number. The addition of a two in parenthesis indicates that more than one rock was given the same Sample ID and that rock two of two was analyzed. For one sample, D28-01, an L followed by a number and a stratigraphic location was added to explain specific layers that were analyzed.
Latitude
Latitude at which sample was collected
producer defined
-11.451
-5.648
decimal degrees
0.001
Longitude
Longitude at which sample was collected
producer defined
-179.803
-179.875
decimal degrees
0.001
Water_Depth
Water depth in meters at which the sample was collected
producer defined
2286
4110
meters (m)
1
Genetic_Type
The genetic type for each mineral sample
Producer defined
hydrogenetic
the sample or subsample is a hydrogenetic ferromangense crust, which means the mineral was precipitated predominantly from seawater
producer defined
hydrothermal
the sample or subsample is a hydrothermally mineralized sample and hydrothermal fluid contributed to sample formation
producer defined
Bulk_Layer
Defines whether the sample analyzed was a bulk sample, a discrete layer sample, or a spherical nodule sample
Producer defined
B
this is a bulk sample
producer defined
L
this is a layer sample
producer defined
nodule
this is a spherical nodule sample
producer defined
sample_depth_interval
The depth interval, measured in millimeters from the top of the stratigraphic section, that encompasses each rock layer sample
Producer defined
Sample and layer subsample intervals are listed as ranges of integer values that represent the depth in millimeters below the surface of the crust. Samples with NA listed do not have a morphology that allows for an interval to be measured and defined.
Fe
Iron concentration in each sample
standard reporting value in geochemistry
6500
268000
parts per million
100
Mn
Manganese concentration in each sample
standard reporting value in geochemistry
87900
313600
parts per million
100
Si
Silicon concentration in each sample
standard reporting value in geochemistry
4200
146900
parts per million
100
Al
Aluminum concentration in each sample
standard reporting value in geochemistry
3000
52700
parts per million
100
Mg
Magnesium concentration in each sample
standard reporting value in geochemistry
9900
18600
parts per million
100
Ca
Calcium concentration in each sample
standard reporting value in geochemistry
20200
213700
parts per million
100
Na
Sodium concentration in each sample
standard reporting value in geochemistry
3800
22900
parts per million
100
K
Potassium concentration in each sample
standard reporting value in geochemistry
3100
25300
parts per million
100
Ti
Titanium concentration in each sample
standard reporting value in geochemistry
300
21700
parts per million
100
P
Phosphorus concentration in each sample
standard reporting value in geochemistry
300
11600
parts per million
100
S
Sulfur concentration in each sample
standard reporting value in geochemistry
500
2900
parts per million
100
CO2
carbon dioxide concentration in each sample
standard reporting value in geochemistry
2700
227400
parts per million
100
LOI
Loss on ignition when heated to 1000 C for each sample
standard reporting value in geochemistry
263000
4585000
parts per million
100
H2OM
Quantity of H2O-, or sorbed water, in each sample
standard reporting value in geochemistry
50000
266000
parts per million
1000
H2OP
Quantity of H2O+, or structural water, in each sample
standard reporting value in geochemistry
47000
253000
parts per million
1000
Ag
Silver concentration in each sample
standard reporting value in geochemistry
0.02
1.33
parts per million
0.01
As
Arsenic concentration in each sample
standard reporting value in geochemistry
9.5
307.9
parts per million
0.1
Ba
Barium concentration in each sample
standard reporting value in geochemistry
405
2073
parts per million
1
Be
Berrylium concentration in each sample
standard reporting value in geochemistry
0.2
8.2
parts per million
0.1
Bi
Bismuth concentration in each sample
standard reporting value in geochemistry
0.2
43.3
parts per million
0.1
Cd
Cadmium concentration in each sample
standard reporting value in geochemistry
2.0
19.9
parts per million
0.1
Cl
Chlorine concentration in each sample
standard reporting value in geochemistry
574
12768
parts per million
1
Co
Cobalt concentration in each sample
standard reporting value in geochemistry
46
12808
parts per million
1
Cr
Chromium concentration in each sample
standard reporting value in geochemistry
1.1
107.9
parts per million
0.1
Cu
Copper concentration in each sample
standard reporting value in geochemistry
554
2881
parts per million
1
F
Fluorine concentration in each sample
standard reporting value in geochemistry
148
3438
parts per million
1
Hf
Hafnium concentration in each sample
standard reporting value in geochemistry
0.4
15.2
parts per million
0.1
Hg
Mercury concentration in each sample
standard reporting value in geochemistry
0.004
1.020
parts per million
0.001
In
Indium concentration in each sample
standard reporting value in geochemistry
0.02
0.68
parts per million
0.01
Li
Lithium concentration in each sample
standard reporting value in geochemistry
1.3
402.7
parts per million
0.1
Mo
Molybdenum concentration in each sample
standard reporting value in geochemistry
138
631
parts per million
1
Nb
Niobium concentration in each sample
standard reporting value in geochemistry
2.1
124.5
parts per million
0.1
Ni
Nickel concentration in each sample
standard reporting value in geochemistry
1571
7554
parts per million
1
Pb
Lead concentration in each sample
standard reporting value in geochemistry
21
1546
parts per million
1
Rb
Rubidium concentration in each sample
standard reporting value in geochemistry
2.3
41.2
parts per million
0.1
Sb
Antimony concentration in each sample
standard reporting value in geochemistry
30
89
parts per million
1
Sc
Scandium concentration in each sample
standard reporting value in geochemistry
2.0
18.3
parts per million
0.1
Se
Selenium concentration in each sample
standard reporting value in geochemistry
0.3
6.7
parts per million
0.1
Sn
Tin concentration in each sample
standard reporting value in geochemistry
0.9
55.9
parts per million
0.1
Sr
Strontium concentration in each sample
standard reporting value in geochemistry
702
1741
parts per million
1
Ta
Tantalum concentration in each sample
standard reporting value in geochemistry
0.04
4.18
parts per million
0.01
Te
Tellurium concentration in each sample
standard reporting value in geochemistry
1.1
158.2
parts per million
0.1
Th
Thorium concentration in each sample
standard reporting value in geochemistry
0.2
16.7
parts per million
0.1
Tl
Thallium concentration in each sample
standard reporting value in geochemistry
45
292
parts per million
1
U
Uranium concentration in each sample
standard reporting value in geochemistry
2.8
15.3
parts per million
0.1
V
Vanadium concentration in each sample
standard reporting value in geochemistry
168
862
parts per million
1
W
Tungsten concentration in each sample
standard reporting value in geochemistry
24
112
parts per million
1
Zn
Zinc concentration in each sample
standard reporting value in geochemistry
395
1223
parts per million
1
Zr
Zirconium concentration in each sample
standard reporting value in geochemistry
19
906
parts per million
1
La
Lanthanum concentration in each sample
standard reporting value in geochemistry
11.9
338.1
parts per million
0.1
Ce
Cerium concentration in each sample
standard reporting value in geochemistry
8.0
1302.4
parts per million
0.1
Pr
Praseodymium concentration in each sample
standard reporting value in geochemistry
2.0
63.5
parts per million
0.1
Nd
Neodyium concentration in each sample
standard reporting value in geochemistry
9.4
269.4
parts per million
0.1
Sm
Samarium concentration in each sample
standard reporting value in geochemistry
2.0
56.1
parts per million
0.1
Eu
Europium concentration in each sample
standard reporting value in geochemistry
0.57
13.67
parts per million
0.01
Gd
Gadolinium concentration in each sample
standard reporting value in geochemistry
2.8
62.2
parts per million
0.1
Tb
Terbium concentration in each sample
standard reporting value in geochemistry
0.41
9.39
parts per million
0.01
Dy
Dysprosium concentration in each sample
standard reporting value in geochemistry
2.9
58.0
parts per million
0.1
Y
Yttrium content in each sample
standard reporting value in geochemistry
18.4
300.0
parts per million
0.1
Ho
Holmium concentration in each sample
standard reporting value in geochemistry
0.71
12.31
parts per million
0.01
Er
Erbium concentration in each sample
standard reporting value in geochemistry
1.9
35.3
parts per million
0.1
Tm
Thulium concentration in each sample
standard reporting value in geochemistry
0.28
5.01
parts per million
0.01
Yb
Ytterbium concentration in each sample
standard reporting value in geochemistry
1.8
32.0
parts per million
0.1
Lu
Lutetium concentration in each sample
standard reporting value in geochemistry
0.31
5.11
parts per million
0.01
SUM_REY
Summation of the concentration of rare earth elements (La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) plus Y in each sample
standard reporting value in geochemistry
63
2375
parts per million
1
Percent_HREY
Percentage of the heavy rare earth elements calculated by taking the sum of heavy rare earth elements (Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) and Y and dividing by the total_REY for each sample.
standard reporting value in geochemistry
15.5
47.5
percent
0.1
Au
Gold concentration in each sample
standard reporting value in geochemistry
0.017
0.101
parts per million
0.001
Ir
Iridium concentration in each sample
standard reporting value in geochemistry
0.006
0.012
parts per million
0.001
Os
Osmium concentration in each sample
standard reporting value in geochemistry
0.002
0.008
parts per million
0.001
Pd
Palladium concentration in each sample
standard reporting value in geochemistry
0.003
0.009
parts per million
0.001
Pt
Platinum concentration in each sample
standard reporting value in geochemistry
0.109
0.800
parts per million
0.001
Rh
Rhenium concentration in each sample
standard reporting value in geochemistry
0.010
0.040
parts per million
0.001
Ru
Ruthenium concentration in each sample
standard reporting value in geochemistry
0.010
0.032
parts per million
0.001
Fe_Detection
The detection limit for iron concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Mn_Detection
The detection limit for manganese concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Si_Detection
The detection limit for silicon concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Al_Detection
The detection limit for aluminum concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Mg_Detection
The detection limit for magnesium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Ca_Detection
The detection limit for calcium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Na_Detection
The detection limit for sodium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
K_Detection
The detection limit for potassium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Ti_Detection
The detection limit for titanium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
P_Detection
The detection limit for phosphorus concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
S_Detection
The detection limit for sulfur concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
CO2_Detection
The detection limit for carbon dioxide concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
LOI_Detection
The detection limit for loss on ignition based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
H2OM_Detection
The detection limit for H2O-, or sorbed water, concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
H2OP_Detection
The detection limit for H2O+, or structural water, concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Ag_Detection
The detection limit for silver concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
As_Detection
The detection limit for aresenic concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Ba_Detection
The detection limit for barium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Be_Detection
The detection limit for beryllium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Bi_Detection
The detection limit for bismuth concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Cd_Detection
The detection limit for cadmium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Cl_Detection
The detection limit for chlorine concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Co_Detection
The detection limit for cobalt concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Cr_Detection
The detection limit for chromium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Cu_Detection
The detection limit for copper concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
F_Detection
The detection limit for fluorine concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Hf_Detection
The detection limit for hafnium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Hg_Detection
The detection limit for mercury concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
In_Detection
The detection limit for indium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Li_Detection
The detection limit for lithium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Mo_Detection
The detection limit for molybdenum concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Nb_Detection
The detection limit for niobium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Ni_Detection
The detection limit for nickel concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Pb_Detection
The detection limit for lead concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Rb_Detection
The detection limit for rubidium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Sb_Detection
The detection limit for antimony concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Sc_Detection
The detection limit for scandium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Se_Detection
The detection limit for selenium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Sn_Detection
The detection limit for tin concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Sr_Detection
The detection limit for strontium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Ta_Detection
The detection limit for tantalum concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Te_Detection
The detection limit for tellurium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Th_Detection
The detection limit for thorium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Tl_Detection
The detection limit for thallium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
U_Detection
The detection limit for uranium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
V_Detection
The detection limit for vanadium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
W_Detection
The detection limit for tungsten concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Zn_Detection
The detection limit for zinc concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Zr_Detection
The detection limit for zirconium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
La_Detection
The detection limit for lanthanum concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Ce_Detection
The detection limit for cerium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Pr_Detection
The detection limit for praseodymium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Nd_Detection
The detection limit for neodymium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Sm_Detection
The detection limit for samarium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Eu_Detection
The detection limit for europium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Gd_Detection
The detection limit for gadolinium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Tb_Detection
The detection limit for terbium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Dy_Detection
The detection limit for dysprosium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Y_Detection
The detection limit for yttrium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Ho_Detection
The detection limit for holmium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Er_Detection
The detection limit for erbium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Tm_Detection
The detection limit for thulium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Yb_Detection
The detection limit for ytterbium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Lu_Detection
The detection limit for lutetium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Au_Detection
The detection limit for gold concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Ir_Detection
The detection limit for iridium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Os_Detection
The detection limit for osmium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Pd_Detection
The detection limit for palladium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Pt_Detection
The detection limit for platinum concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Rh_Detection
The detection limit for rhodium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Ru_Detection
The detection limit for ruthenium concentration based on the measurement method and instrumentation
Producer defined
Numerical value provided by the analyzer in parts per million
Fe_method
An alphanumeric code that denotes the method and instrumentation used to measure iron concentration
Producer defined
XRF_BF_1
X-Ray Fluorescence (XRF) on borate fused disks by SGS Minerals analytical labs
producer defined
Mn_method
An alphanumeric code that denotes the method and instrumentation used to measure manganese concentration
Producer defined
XRF_BF_1
X-Ray Fluorescence (XRF) on borate fused disks by SGS Minerals analytical labs
producer defined
Si_method
An alphanumeric code that denotes the method and instrumentation used to measure silicon concentration
Producer defined
XRF_BF_1
X-Ray Fluorescence (XRF) on borate fused disks by SGS Minerals analytical labs
producer defined
Al_method
An alphanumeric code that denotes the method and instrumentation used to measure aluminum concentration
Producer defined
XRF_BF_1
X-Ray Fluorescence (XRF) on borate fused disks by SGS Minerals analytical labs
producer defined
Mg_method
An alphanumeric code that denotes the method and instrumentation used to measure magnesium concentration
Producer defined
XRF_BF_1
X-Ray Fluorescence (XRF) on borate fused disks by SGS Minerals analytical labs
producer defined
Ca_method
An alphanumeric code that denotes the method and instrumentation used to measure calcium concentration
Producer defined
XRF_BF_1
X-Ray Fluorescence (XRF) on borate fused disks by SGS Minerals analytical labs
producer defined
Na_method
An alphanumeric code that denotes the method and instrumentation used to measure sodium concentration
Producer defined
XRF_BF_1
X-Ray Fluorescence (XRF) on borate fused disks by SGS Minerals analytical labs
producer defined
K_method
An alphanumeric code that denotes the method and instrumentation used to measure potassium concentration
Producer defined
XRF_BF_1
X-Ray Fluorescence (XRF) on borate fused disks by SGS Minerals analytical labs
producer defined
Ti_method
An alphanumeric code that denotes the method and instrumentation used to measure titanium concentration
Producer defined
XRF_BF_1
X-Ray Fluorescence (XRF) on borate fused disks by SGS Minerals analytical labs
producer defined
P_method
An alphanumeric code that denotes the method and instrumentation used to measure phosphorus concentration
Producer defined
XRF_BF_1
X-Ray Fluorescence (XRF) on borate fused disks by SGS Minerals analytical labs
producer defined
S_method
An alphanumeric code that denotes the method and instrumentation used to measure sulfur concentration
Producer defined
ICP_AES_4ACID
Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES) following a four-acid digest of hydrochloric, hydrofluoric, nitric, perchloric acids by SGS Minerals analytical labs
producer defined
CO2_method
An alphanumeric code that denotes the method and instrumentation used to measure carbon dioxide concentration
Producer defined
coulometry
coulometry by SGS Minerals analytical labs
producer defined
LOI_method
An alphanumeric code that denotes the method and instrumentation used to measure loss on ignition
Producer defined
XRF_BF_1
X-Ray Fluorescence (XRF) on borate fused disks by SGS Minerals analytical labs
producer defined
H2OM_method
An alphanumeric code that denotes the method and instrumentation used to measure H2O-, or sorbed water, concentration
Producer defined
gravimetric
gravimetric analysis by SGS Minerals analytical labs
producer defined
H2OP_method
An alphanumeric code that denotes the method and instrumentation used to measure H2O+, or structural water, concentration
Producer defined
penfield_infrared
penfield-infrared analysis by SGS Minerals analytical labs
producer defined
Ag_method
An alphanumeric code that denotes the method and instrumentation used to measure silver concentration
Producer defined
ICP_MS_4ACID
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) following a four-acid digest of hydrochloric, hydrofluoric, nitric, perchloric acids by SGS Minerals analytical labs
producer defined
As_method
An alphanumeric code that denotes the method and instrumentation used to measure aresenic concentration
Producer defined
ICP_MS_4ACID
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) following a four-acid digest of hydrochloric, hydrofluoric, nitric, perchloric acids by SGS Minerals analytical labs
producer defined
Ba_method
An alphanumeric code that denotes the method and instrumentation used to measure barium concentration
Producer defined
ICP_AES_4ACID
Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES) following a four-acid digest of hydrochloric, hydrofluoric, nitric, perchloric acids by SGS Minerals analytical labs
producer defined
Be_method
An alphanumeric code that denotes the method and instrumentation used to measure beryllium concentration
Producer defined
ICP_MS_4ACID
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) following a four-acid digest of hydrochloric, hydrofluoric, nitric, perchloric acids by SGS Minerals analytical labs
producer defined
Bi_method
An alphanumeric code that denotes the method and instrumentation used to measure bismuth concentration
Producer defined
ICP_MS_4ACID
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) following a four-acid digest of hydrochloric, hydrofluoric, nitric, perchloric acids by SGS Minerals analytical labs
producer defined
Cd_method
An alphanumeric code that denotes the method and instrumentation used to measure cadmium concentration
Producer defined
ICP_MS_4ACID
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) following a four-acid digest of hydrochloric, hydrofluoric, nitric, perchloric acids by SGS Minerals analytical labs
producer defined
Cl_method
An alphanumeric code that denotes the method and instrumentation used to measure chlorine concentration
Producer defined
ion-selective electrode
ion-selective electrode by SGS Minerals analytical labs
producer defined
Co_method
An alphanumeric code that denotes the method and instrumentation used to measure cobalt concentration
Producer defined
ICP_MS_HNO3_LiMB
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) using lithium-metaborate fused disks by SGS Minerals analytical labs
producer defined
Cr_method
An alphanumeric code that denotes the method and instrumentation used to measure choromium concentration
Producer defined
ICP_AES_4ACID
Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES) following a four-acid digest of hydrochloric, hydrofluoric, nitric, perchloric acids by SGS Minerals analytical labs
producer defined
Cu_method
An alphanumeric code that denotes the method and instrumentation used to measure copper concentration
Producer defined
ICP_AES_4ACID
Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES) following a four-acid digest of hydrochloric, hydrofluoric, nitric, perchloric acids by SGS Minerals analytical labs
producer defined
F_method
An alphanumeric code that denotes the method and instrumentation used to measure fluorine concentration
Producer defined
ion-selective electrode
ion-selective electrode by SGS Minerals analytical labs
producer defined
Hf_method
An alphanumeric code that denotes the method and instrumentation used to measure hafnium concentration
Producer defined
ICP_MS_4ACID
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) following a four-acid digest of hydrochloric, hydrofluoric, nitric, perchloric acids by SGS Minerals analytical labs
producer defined
Hg_method
An alphanumeric code that denotes the method and instrumentation used to measure mercury concentration
Producer defined
CVAA
cold vapor atomic absorption spectroscopy (CVAA) by SGS Minerals analytical labs
producer defined
In_method
An alphanumeric code that denotes the method and instrumentation used to measure indium concentration
Producer defined
ICP_MS_4ACID
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) following a four-acid digest of hydrochloric, hydrofluoric, nitric, perchloric acids by SGS Minerals analytical labs
producer defined
Li_method
An alphanumeric code that denotes the method and instrumentation used to measure lithium concentration based on the measurement method and instrumentation
Producer defined
ICP_AES_4ACID
Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES) following a four-acid digest of hydrochloric, hydrofluoric, nitric, perchloric acids by SGS Minerals analytical labs
producer defined
Mo_method
An alphanumeric code that denotes the method and instrumentation used to measure molybdenum concentration
Producer defined
ICP_MS_HNO3_LiMB
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) using lithium-metaborate fused disks by SGS Minerals analytical labs
producer defined
Nb_method
An alphanumeric code that denotes the method and instrumentation used to measure niobium concentration
Producer defined
ICP_MS_HNO3_LiMB
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) using lithium-metaborate fused disks by SGS Minerals analytical labs
producer defined
Ni_method
An alphanumeric code that denotes the method and instrumentation used to measure nickel concentration
Producer defined
ICP_MS_HNO3_LiMB
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) using lithium-metaborate fused disks by SGS Minerals analytical labs
producer defined
Pb_method
An alphanumeric code that denotes the method and instrumentation used to measure lead concentration
Producer defined
ICP_MS_4ACID
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) following a four-acid digest of hydrochloric, hydrofluoric, nitric, perchloric acids by SGS Minerals analytical labs
producer defined
Rb_method
An alphanumeric code that denotes the method and instrumentation used to measure rubidium concentration
Producer defined
ICP_MS_HNO3_LiMB
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) using lithium-metaborate fused disks by SGS Minerals analytical labs
producer defined
Sb_method
An alphanumeric code that denotes the method and instrumentation used to measure antimony concentration
Producer defined
ICP_MS_4ACID
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) following a four-acid digest of hydrochloric, hydrofluoric, nitric, perchloric acids by SGS Minerals analytical labs
producer defined
Sc_method
An alphanumeric code that denotes the method and instrumentation used to measure scandium concentration
Producer defined
ICP_MS_4ACID
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) following a four-acid digest of hydrochloric, hydrofluoric, nitric, perchloric acids by SGS Minerals analytical labs
producer defined
Se_method
An alphanumeric code that denotes the method and instrumentation used to measure selenium concentration
Producer defined
ICP_MS_4ACID
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) following a four-acid digest of hydrochloric, hydrofluoric, nitric, perchloric acids by SGS Minerals analytical labs
producer defined
Sn_method
An alphanumeric code that denotes the method and instrumentation used to measure tin concentration
Producer defined
ICP_MS_4ACID
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) following a four-acid digest of hydrochloric, hydrofluoric, nitric, perchloric acids by SGS Minerals analytical labs
producer defined
Sr_method
An alphanumeric code that denotes the method and instrumentation used to measure strontium concentration
Producer defined
ICP_AES_4ACID
Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES) following a four-acid digest of hydrochloric, hydrofluoric, nitric, perchloric acids by SGS Minerals analytical labs
producer defined
Ta_method
An alphanumeric code that denotes the method and instrumentation used to measure tantalum concentration
Producer defined
ICP_MS_4ACID
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) following a four-acid digest of hydrochloric, hydrofluoric, nitric, perchloric acids by SGS Minerals analytical labs
producer defined
Te_method
An alphanumeric code that denotes the method and instrumentation used to measure tellurium concentration
Producer defined
AAS_hydride_generation
hydride generation and graphite furnace Atomic-Absorption Spectrometry (AAS) by SGS Minerals analytical labs
producer defined
Th_method
An alphanumeric code that denotes the method and instrumentation used to measure thorium concentration
Producer defined
ICP_MS_4ACID
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) following a four-acid digest of hydrochloric, hydrofluoric, nitric, perchloric acids by SGS Minerals analytical labs
producer defined
Tl_method
An alphanumeric code that denotes the method and instrumentation used to measure thallium concentration
Producer defined
ICP_MS_4ACID
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) following a four-acid digest of hydrochloric, hydrofluoric, nitric, perchloric acids by SGS Minerals analytical labs
producer defined
U_method
An alphanumeric code that denotes the method and instrumentation used to measure uranium concentration
Producer defined
ICP_MS_HNO3_LiMB
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) using lithium-metaborate fused disks by SGS Minerals analytical labs
producer defined
V_method
An alphanumeric code that denotes the method and instrumentation used to measure vanadium concentration
Producer defined
ICP_MS_HNO3_LiMB
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) using lithium-metaborate fused disks by SGS Minerals analytical labs
producer defined
W_method
An alphanumeric code that denotes the method and instrumentation used to measure tungsten concentration
Producer defined
ICP_MS_HNO3_LiMB
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) using lithium-metaborate fused disks by SGS Minerals analytical labs
producer defined
Zn_method
An alphanumeric code that denotes the method and instrumentation used to measure zinc concentration
Producer defined
ICP_AES_4ACID
Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES) following a four-acid digest of hydrochloric, hydrofluoric, nitric, perchloric acids by SGS Minerals analytical labs
producer defined
Zr_method
An alphanumeric code that denotes the method and instrumentation used to measure zirconium concentration
Producer defined
ICP_MS_HNO3_LiMB
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) using lithium-metaborate fused disks by SGS Minerals analytical labs
producer defined
La_method
An alphanumeric code that denotes the method and instrumentation used to measure lanthanum concentration
Producer defined
ICP_MS_HNO3_LiMB
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) using lithium-metaborate fused disks by SGS Minerals analytical labs
producer defined
Ce_method
An alphanumeric code that denotes the method and instrumentation used to measure cerium concentration
Producer defined
ICP_MS_HNO3_LiMB
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) using lithium-metaborate fused disks by SGS Minerals analytical labs
producer defined
Pr_method
An alphanumeric code that denotes the method and instrumentation used to measure praseodymium concentration
Producer defined
ICP_MS_HNO3_LiMB
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) using lithium-metaborate fused disks by SGS Minerals analytical labs
producer defined
Nd_method
An alphanumeric code that denotes the method and instrumentation used to measure neodymium concentration
Producer defined
ICP_MS_HNO3_LiMB
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) using lithium-metaborate fused disks by SGS Minerals analytical labs
producer defined
Sm_method
TAn alphanumeric code that denotes the method and instrumentation used to measure samarium concentration
Producer defined
ICP_MS_HNO3_LiMB
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) using lithium-metaborate fused disks by SGS Minerals analytical labs
producer defined
Eu_method
An alphanumeric code that denotes the method and instrumentation used to measure europium concentration
Producer defined
ICP_MS_HNO3_LiMB
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) using lithium-metaborate fused disks by SGS Minerals analytical labs
producer defined
Gd_method
An alphanumeric code that denotes the method and instrumentation used to measure gadolinium concentration
Producer defined
ICP_MS_HNO3_LiMB
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) using lithium-metaborate fused disks by SGS Minerals analytical labs
producer defined
Tb_method
An alphanumeric code that denotes the method and instrumentation used to measure terbium concentration
Producer defined
ICP_MS_HNO3_LiMB
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) using lithium-metaborate fused disks by SGS Minerals analytical labs
producer defined
Dy_method
An alphanumeric code that denotes the method and instrumentation used to measure dysprosium concentration
Producer defined
ICP_MS_HNO3_LiMB
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) using lithium-metaborate fused disks by SGS Minerals analytical labs
producer defined
Y_method
An alphanumeric code that denotes the method and instrumentation used to measure yttrium concentration
Producer defined
ICP_MS_HNO3_LiMB
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) using lithium-metaborate fused disks by SGS Minerals analytical labs
producer defined
Ho_method
An alphanumeric code that denotes the method and instrumentation used to measure holmium concentration
Producer defined
ICP_MS_HNO3_LiMB
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) using lithium-metaborate fused disks by SGS Minerals analytical labs
producer defined
Er_method
An alphanumeric code that denotes the method and instrumentation used to measure erbium concentration
Producer defined
ICP_MS_HNO3_LiMB
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) using lithium-metaborate fused disks by SGS Minerals analytical labs
producer defined
Tm_method
An alphanumeric code that denotes the method and instrumentation used to measure thulium concentration
Producer defined
ICP_MS_HNO3_LiMB
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) using lithium-metaborate fused disks by SGS Minerals analytical labs
producer defined
Yb_method
An alphanumeric code that denotes the method and instrumentation used to measure ytterbium concentration
Producer defined
ICP_MS_HNO3_LiMB
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) using lithium-metaborate fused disks by SGS Minerals analytical labs
producer defined
Lu_method
An alphanumeric code that denotes the method and instrumentation used to measure lutetium concentration
Producer defined
ICP_MS_HNO3_LiMB
Inductively Coupled Plasma Mass Spectrometry (ICP-MS) using lithium-metaborate fused disks by SGS Minerals analytical labs
producer defined
Au_method
An alphanumeric code that denotes the method and instrumentation used to measure gold concentration
Producer defined
ICP_MS_NiS_fire_assay
fire assay nickel sulfide collection and Inductively Coupled Plasma Mass Spectrometry (ICP-MS) by Intertek analytical labs
producer defined
Ir_method
An alphanumeric code that denotes the method and instrumentation used to measure iridium concentration
Producer defined
ICP_MS_NiS_fire_assay
fire assay nickel sulfide collection and Inductively Coupled Plasma Mass Spectrometry (ICP-MS) by Intertek analytical labs
producer defined
Os_method
An alphanumeric code that denotes the method and instrumentation used to measure osmium concentration
Producer defined
ICP_MS_NiS_fire_assay
fire assay nickel sulfide collection and Inductively Coupled Plasma Mass Spectrometry (ICP-MS) by Intertek analytical labs
producer defined
Pd_method
An alphanumeric code that denotes the method and instrumentation used to measure palladium concentration
Producer defined
ICP_MS_NiS_fire_assay
fire assay nickel sulfide collection and Inductively Coupled Plasma Mass Spectrometry (ICP-MS) by Intertek analytical labs
producer defined
Pt_method
An alphanumeric code that denotes the method and instrumentation used to measure platinum concentration
Producer defined
ICP_MS_NiS_fire_assay
fire assay nickel sulfide collection and Inductively Coupled Plasma Mass Spectrometry (ICP-MS) by Intertek analytical labs
producer defined
Rh_method
An alphanumeric code that denotes the method and instrumentation used to measure rhodium concentration
Producer defined
ICP_MS_NiS_fire_assay
fire assay nickel sulfide collection and Inductively Coupled Plasma Mass Spectrometry (ICP-MS) by Intertek analytical labs
producer defined
Ru_method
An alphanumeric code that denotes the method and instrumentation used to measure ruthenium concentration
Producer defined
ICP_MS_NiS_fire_assay
fire assay nickel sulfide collection and Inductively Coupled Plasma Mass Spectrometry (ICP-MS) by Intertek analytical labs
producer defined
The first line of the csv file is a header line.
U.S. Geological Survey
U.S. Geological Survey, Pacific Coastal and Marine Science Center
PCMSC Science Data Coordinator
mailing and physical
2885 Mission Street
Santa Cruz
CA
95060
831-427-4747
pcmsc_data@usgs.gov
These data are available in .csv format contained in a single file.
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.
comma-delimited text
Microsoft Excel 16.16.17 for Mac
File contains table in .csv format
No compression applied
0.11533
https://www.sciencebase.gov/catalog/file/get/63b6512ed34e92aad3cacaf8
https://www.sciencebase.gov/catalog/item/63b6512ed34e92aad3cacaf8
https://doi.org/10.5066/P95CIHSU
Data can be downloaded using the Network_Resource_Name links. The first link is a direct link to download a zipped file of data and metadata. The second link points to a landing page with metadata and data. The third link points to the landing page for the entire data release.
None.
These data can be viewed with Microsoft Excel or any text reader.
20230125
U.S. Geological Survey, Pacific Coastal and Marine Science Center
PCMSC Science Data Coordinator
mailing and physical
2885 Mission Street
Santa Cruz
CA
95060
831-427-4747
pcmsc_data@usgs.gov
Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998