Geochemistry of sediment subsamples from Loki's Castle and Favne Vent Fields, Mohns Ridge

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What does this data set describe?

Title:

Geochemistry of sediment subsamples from Loki's Castle and Favne Vent Fields, Mohns Ridge

Abstract:

This data release contains geochemical data of sediment subsamples collected in 2018 and 2019 from Loki’s Ridge and Favne Vent Fields, Mohns Ridge, part of the Arctic Mid-Atlantic Ridge. Data include major, minor and trace element concentrations, location information (latitude, longitude, depth), analytical methods, and instrument detection limits where available.

Supplemental_Information:

Funding for this research is acknowledged from the U.S. Geological Survey Coastal and Marine Hazards and Resources Program, through the U.S. Geological Survey Pacific Coastal and Marine Science Center. Sediment subsamples were collected aboard the Institute of Marine Research’s (IMR; Bergen, Norway) R/V G.O. Sars during IMR cruises GS18-218 (2018) and GS19-108 (2019). Samples from 2018 were collected solely by IMR and donated to the USGS. Additional information about the USGS field activities from which these data were derived is available online at:
https://cmgds.marine.usgs.gov/fan_info.php?fan=2018-691-DD https://cmgds.marine.usgs.gov/fan_info.php?fan=2019-624-FA
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.

How might this data set be cited?
Au, Manda V., Payan, Denise, and Gartman, Amy, 20240110, Geochemistry of sediment subsamples from Loki's Castle and Favne Vent Fields, Mohns Ridge: data release DOI:10.5066/P96D02FG, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.
Online Links:
- https://doi.org/10.5066/P96D02FG
This is part of the following larger work.
Gartman, Amy, Au, Manda V., and Payan, Denise, 2023, Computed tomography (CT) scans, photographs, X-ray fluorescence (XRF) scans, geochemistry, XRD, and gamma-ray bulk density data of push cores from Loki's Castle and Favne vent fields, Mohns Ridge: data release DOI:10.5066/P96D02FG, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, CA.
Online Links:
- https://doi.org/10.5066/P96D02FG
Other_Citation_Details:
Suggested Citation: Gartman, A., Au, M.V., and Payan, D., 2024, Computed tomography (CT) scans, photographs, X-ray fluorescence (XRF) scans, geochemistry, XRD, and gamma-ray bulk density data of push cores from Loki's Castle and Favne vent fields, Mohns Ridge: U.S. Geological Survey data release, https://doi.org/10.5066/P96D02FG.
What geographic area does the data set cover?
West_Bounding_Coordinate: 3.8318
East_Bounding_Coordinate: 8.1661
North_Bounding_Coordinate: 73.5678
South_Bounding_Coordinate: 72.7556
What does it look like?
Does the data set describe conditions during a particular time period?

Beginning_Date: 18-Jul-2018

Ending_Date: 04-Jul-2019

Currentness_Reference:

ground condition at time data were collected
What is the general form of this data set?
Geospatial_Data_Presentation_Form: comma-delimited text
How does the data set represent geographic features?
1. How are geographic features stored in the data set?
  This is a Point data set. It contains the following vector data types (SDTS terminology):
  - Point (65)
2. What coordinate system is used to represent geographic features?
  Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.0001. Longitudes are given to the nearest 0.0001. Latitude and longitude values are specified in Decimal degrees. The horizontal datum used is D_WGS_1984.
  The ellipsoid used is WGS_1984.
  The semi-major axis of the ellipsoid used is 6378137.0.
  The flattening of the ellipsoid used is 1/298.257222101.

How does the data set describe geographic features?

LokisMohns_marine_mineral_geochemistry.csv

Comma-deliminated file containing results from geochemical analyses of marine mineral samples at the latitude, longitude, and water depth of each sample location. The value -8888 indicates that the measurement for an analyte was below the detection limit. Values of -9999 for concentration attributes indicate that no analysis was performed. Values of NaN and -9999 for method and detection limit attributes respectively indicate that no information was available. (Source: producer defined)

Cruise_ID

Lists the alphanumeric cruise identifier for the expedition during which the sample was collected (Source: producer defined)

Value	Definition
GS18-218	IMR cruise identification affiliated with Field Activity 2018-691-DD
GS19-108	IMR cruise identification affiliated with Field Activity 2019-624-FA

Sample_ID

The sample and push core ID for each sample (Source: producer defined) The sample names include a dive number (ROV, denoting remotely operated vehicle, followed by a number) and push core number (PC, denoting push core, followed by a number).

Latitude

Latitude at which sample was collected (Source: producer defined)

Range of values
Minimum:	72.7556
Maximum:	73.5678
Units:	decimal degrees
Resolution:	0.0001

Longitude

Longitude at which sample was collected (Source: producer defined)

Range of values
Minimum:	3.8318
Maximum:	8.1661
Units:	decimal degrees
Resolution:	0.0001

Water_Depth

Water depth in meters at which the sample was collected. (Source: producer defined)

Range of values
Minimum:	2338
Maximum:	3048
Units:	meters (m)
Resolution:	1

sample_depth_interval

The depth interval, measured in centimeters from the top of the sediment-water interface in the push core. (Source: producer defined) Sample and layer subsample intervals are listed as ranges of value in centimeters from the top of the sediment-water interface in the push core. Samples with bag listed mean that minimal, poorly consolidated material was recovered which was collected into a bag of sediment on deck, and no stratigraphic information was retained.

Fe

Iron concentration in each sample. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	20800
Maximum:	477000
Units:	parts per million
Resolution:	100

Mn

Manganese concentration in each sample. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	200
Maximum:	17700
Units:	parts per million
Resolution:	100

Si

Silicon concentration in each sample. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	14000
Maximum:	269600
Units:	parts per million
Resolution:	100

Al

Aluminum concentration in each sample. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	1000
Maximum:	73800
Units:	parts per million
Resolution:	100

Mg

Magnesium concentration in each sample. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	2000
Maximum:	129300
Units:	parts per million
Resolution:	100

Ca

Calcium concentration in each sample. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	1900
Maximum:	135100
Units:	parts per million
Resolution:	100

Na

Sodium concentration in each sample. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	6600
Maximum:	27000
Units:	parts per million
Resolution:	100

K

Potassium concentration in each sample. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	1000
Maximum:	25200
Units:	parts per million
Resolution:	100

Ti

Titanium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	100
Maximum:	5800
Units:	parts per million
Resolution:	100

P

Phosphorus concentration in each sample. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	100
Maximum:	3600
Units:	parts per million
Resolution:	100

S

Sulfur concentration in each sample. Values of -9999 indicate that no analysis was performed. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	240
Maximum:	124800
Units:	parts per million
Resolution:	10

Ag

Silver concentration in each sample. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	0.05
Maximum:	19.00
Units:	parts per million
Resolution:	0.01

As

Arsenic concentration in each sample. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	7
Maximum:	398
Units:	parts per million
Resolution:	1

B

Boron concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit, and values of -9999 indicate that no analysis was performed. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	12
Maximum:	223
Units:	parts per million
Resolution:	1

Ba

Barium concentration in each sample. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	13
Maximum:	13980
Units:	parts per million
Resolution:	1

Be

Berrylium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	0.1
Maximum:	2.2
Units:	parts per million
Resolution:	0.1

Bi

Bismuth concentration in each sample. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	0.07
Maximum:	21.01
Units:	parts per million
Resolution:	0.01

Br

Bromine concentration in each sample. Values of -9999 indicate that no analysis was performed. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	38
Maximum:	161
Units:	parts per million
Resolution:	1

Cd

Cadmium concentration in each sample. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	0.03
Maximum:	52.70
Units:	parts per million
Resolution:	0.01

Co

Cobalt concentration in each sample. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	2.8
Maximum:	4964.0
Units:	parts per million
Resolution:	0.1

Cr

Chromium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	2.0
Maximum:	136.8
Units:	parts per million
Resolution:	0.1

Cs

Caesium concentration in each sample. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	0.2
Maximum:	12.8
Units:	parts per million
Resolution:	0.1

Cu

Copper concentration in each sample. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	56
Maximum:	86100
Units:	parts per million
Resolution:	1

Ga

Gallium concentration in each sample. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	1.0
Maximum:	19.7
Units:	parts per million
Resolution:	0.1

Ge

Germanium concentration in each sample. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	1
Maximum:	8
Units:	parts per million
Resolution:	1

Hf

Hafnium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit, and values of -9999 indicate that no analysis was performed. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	0.04
Maximum:	2.89
Units:	parts per million
Resolution:	0.01

Hg

Mercury concentration in each sample. Values of -9999 indicate that no analysis was performed. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	0.009
Maximum:	10.550
Units:	parts per million
Resolution:	0.001

In

Indium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit (Source: standard reporting value in geochemistry)

Range of values
Minimum:	0.03
Maximum:	6.20
Units:	parts per million
Resolution:	0.01

Li

Lithium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit (Source: standard reporting value in geochemistry)

Range of values
Minimum:	33
Maximum:	116
Units:	parts per million
Resolution:	1

Mo

Molybdenum concentration in each sample. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	0.55
Maximum:	171.00
Units:	parts per million
Resolution:	0.01

Nb

Niobium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	0.1
Maximum:	13.3
Units:	parts per million
Resolution:	0.1

Ni

Nickel concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	5
Maximum:	62
Units:	parts per million
Resolution:	1

Pb

Lead concentration in each sample. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	9.4
Maximum:	13112.0
Units:	parts per million
Resolution:	0.1

Rb

Rubidium concentration in each sample. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	2.0
Maximum:	137.0
Units:	parts per million
Resolution:	0.1

Sb

Antimony concentration in each sample. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	0.54
Maximum:	23.45
Units:	parts per million
Resolution:	0.01

Sc

Scandium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	1.1
Maximum:	23.4
Units:	parts per million
Resolution:	0.1

Se

Selenium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit, and values of -9999 indicate that no analysis was performed. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	2
Maximum:	140
Units:	parts per million
Resolution:	1

Sn

Tin concentration in each sample. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	1.2
Maximum:	37.0
Units:	parts per million
Resolution:	0.1

Sr

Strontium concentration in each sample. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	21.0
Maximum:	3026.0
Units:	parts per million
Resolution:	0.1

Ta

Tantalum concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	0.05
Maximum:	0.89
Units:	parts per million
Resolution:	0.01

Te

Tellurium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit, and values of -9999 indicate that no analysis was performed. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	0.05
Maximum:	23.21
Units:	parts per million
Resolution:	0.01

Th

Thorium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	0.1
Maximum:	11.5
Units:	parts per million
Resolution:	0.1

Tl

Thallium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	0.12
Maximum:	9.67
Units:	parts per million
Resolution:	0.01

U

Uranium concentration in each sample. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	0.86
Maximum:	16.17
Units:	parts per million
Resolution:	0.01

V

Vanadium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	28
Maximum:	448
Units:	parts per million
Resolution:	1

W

Tungsten concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	0.2
Maximum:	59.0
Units:	parts per million
Resolution:	0.1

Zn

Zinc concentration in each sample. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	89
Maximum:	23926
Units:	parts per million
Resolution:	1

Zr

Zirconium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit, and values of -9999 indicate that no analysis was performed. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	1.2
Maximum:	211.0
Units:	parts per million
Resolution:	0.1

La

Lanthanum concentration in each sample. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	0.3
Maximum:	37.6
Units:	parts per million
Resolution:	0.1

Ce

Cerium concentration in each sample. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	0.5
Maximum:	78.6
Units:	parts per million
Resolution:	0.1

Pr

Praseodymium concentration in each sample. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	0.05
Maximum:	8.45
Units:	parts per million
Resolution:	0.01

Nd

Neodyium concentration in each sample. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	0.2
Maximum:	31.7
Units:	parts per million
Resolution:	0.1

Sm

Samarium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	0.1
Maximum:	5.8
Units:	parts per million
Resolution:	0.1

Eu

Europium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	0.10
Maximum:	1.14
Units:	parts per million
Resolution:	0.01

Gd

Gadolinium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	0.14
Maximum:	5.13
Units:	parts per million
Resolution:	0.01

Tb

Terbium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	0.05
Maximum:	0.88
Units:	parts per million
Resolution:	0.01

Dy

Dysprosium concentration in each sample. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	0.06
Maximum:	4.75
Units:	parts per million
Resolution:	0.01

Y

Yttrium content in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	0.6
Maximum:	21.6
Units:	parts per million
Resolution:	0.1

Ho

Holmium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	0.06
Maximum:	0.84
Units:	parts per million
Resolution:	0.01

Er

Erbium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit (Source: standard reporting value in geochemistry)

Range of values
Minimum:	0.06
Maximum:	2.48
Units:	parts per million
Resolution:	0.01

Tm

Thulium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	0.05
Maximum:	0.39
Units:	parts per million
Resolution:	0.01

Yb

Ytterbium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	0.1
Maximum:	2.6
Units:	parts per million
Resolution:	0.1

Lu

Lutetium concentration in each sample. Values of -8888 indicate that the measurement was below the detection limit. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	0.01
Maximum:	0.40
Units:	parts per million
Resolution:	0.01

Au

Gold concentration in each sample. Values of -9999 indicate that no analysis was performed. (Source: standard reporting value in geochemistry)

Range of values
Minimum:	0.140
Maximum:	1.320
Units:	parts per million
Resolution:	0.001

Fe_Detection

The detection limit for iron concentration based on the measurement method and instrumentation. (Source: 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. (Source: 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. (Source: 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. (Source: 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. (Source: 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. (Source: 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. (Source: 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. (Source: 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. (Source: 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. (Source: 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. Values of -9999 indicate that no analysis was performed. (Source: 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. (Source: Producer defined) Numerical value provided by the analyzer in parts per million

As_Detection

The detection limit for arsenic concentration based on the measurement method and instrumentation. (Source: Producer defined) Numerical value provided by the analyzer in parts per million

B_Detection

The detection limit for boron concentration based on the measurement method and instrumentation. Values of -9999 indicate that the detection limit was not available. (Source: 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. (Source: 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. (Source: 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. (Source: Producer defined) Numerical value provided by the analyzer in parts per million

Br_Detection

The detection limit for bromine concentration based on the measurement method and instrumentation. Values of -9999 indicate that the detection limit was not available. (Source: 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. (Source: 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. (Source: 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. (Source: Producer defined) Numerical value provided by the analyzer in parts per million

Cs_Detection

The detection limit for cesium concentration based on the measurement method and instrumentation. (Source: 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. (Source: Producer defined) Numerical value provided by the analyzer in parts per million

Ga_Detection

The detection limit for gallium concentration based on the measurement method and instrumentation. (Source: Producer defined) Numerical value provided by the analyzer in parts per million

Ge_Detection

The detection limit for germanium concentration based on the measurement method and instrumentation. (Source: 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. Values of -9999 indicate that no analysis was performed. (Source: 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. Values of -9999 indicate that the detection limit was not available. (Source: 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. (Source: 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. (Source: 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. (Source: 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. (Source: 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. (Source: 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. (Source: 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. (Source: 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. (Source: 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. (Source: 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. Values of -9999 indicate that no analysis was performed. (Source: 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. (Source: 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. (Source: 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. (Source: 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. Values of -9999 indicate that no analysis was performed. (Source: 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. (Source: 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. (Source: 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. (Source: 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. (Source: 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. (Source: 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. (Source: 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. Values of -9999 indicate that no analysis was performed. (Source: 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. (Source: 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. (Source: 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. (Source: 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. (Source: 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. (Source: 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. (Source: 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. (Source: 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. (Source: 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. (Source: 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. (Source: 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. (Source: 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. (Source: 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. (Source: 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. (Source: 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. (Source: 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. Values of -9999 indicate that the detection limit was not available. (Source: 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. (Source: Producer defined)

Value	Definition
GO_XRF72	Borate Fusion, X-Ray fluorescence (XRF), Ore Grade
INAA	Neutron Activation
GO_ICP95A50	LiBO2 Fusion, minors/majors, Inductively Coupled Plasma Atomic Emission Spectrometry (ICPAES)

Mn_method

An alphanumeric code that denotes the method and instrumentation used to measure manganese concentration. (Source: Producer defined)

Value	Definition
GO_XRF72	Borate Fusion, XRF, Ore Grade
GE_ICP90A50	Na2O2 Fusion, ICPAES
GO_ICP95A50	LiBO2 Fusion, minors/majors, ICPAES

Si_method

An alphanumeric code that denotes the method and instrumentation used to measure silicon concentration. (Source: Producer defined)

Value	Definition
GO_XRF72	Borate Fusion, XRF, Ore Grade
GE_ICP90A50	Na2O2 Fusion, ICPAES
GO_ICP95A50	LiBO2 Fusion, minors/majors, ICPAES

Al_method

An alphanumeric code that denotes the method and instrumentation used to measure aluminum concentration. (Source: Producer defined)

Value	Definition
GO_XRF72	Borate Fusion, XRF, Ore Grade
GE_ICP90A50	Na2O2 Fusion, ICPAES
GO_ICP95A50	LiBO2 Fusion, minors/majors, ICPAES

Mg_method

An alphanumeric code that denotes the method and instrumentation used to measure magnesium concentration. (Source: Producer defined)

Value	Definition
GO_XRF72	Borate Fusion, XRF, Ore Grade
GE_ICP90A50	Na2O2 Fusion, ICPAES
GO_ICP95A50	LiBO2 Fusion, minors/majors, ICPAES

Ca_method

An alphanumeric code that denotes the method and instrumentation used to measure calcium concentration. (Source: Producer defined)

Value	Definition
GO_XRF72	Borate Fusion, XRF, Ore Grade
GE_ICP90A50	Na2O2 Fusion, ICPAES
GO_ICP95A50	LiBO2 Fusion, minors/majors, ICPAES

Na_method

An alphanumeric code that denotes the method and instrumentation used to measure sodium concentration. (Source: Producer defined)

Value	Definition
GO_XRF72	Borate Fusion, XRF, Ore Grade
INAA	Neutron Activation
GO_ICP95A50	LiBO2 Fusion, minors/majors, ICPAES

K_method

An alphanumeric code that denotes the method and instrumentation used to measure potassium concentration. (Source: Producer defined)

Value	Definition
GO_XRF72	Borate Fusion, XRF, Ore Grade
GE_ICP90A50	Na2O2 Fusion, ICPAES
GO_ICP95A50	LiBO2 Fusion, minors/majors, ICPAES

Ti_method

An alphanumeric code that denotes the method and instrumentation used to measure titanium concentration. (Source: Producer defined)

Value	Definition
GO_XRF72	Borate Fusion, XRF, Ore Grade
GE_ICP90A50	Na2O2 Fusion, ICPAES
GE_ICP40Q12	4 Acid Digest (HCL/HCLO4/HF/HNO3), Inductively Coupled Plasma (ICP)
GO_ICP95A50	LiBO2 Fusion, minors/majors, ICPAES

P_method

An alphanumeric code that denotes the method and instrumentation used to measure phosphorus concentration. (Source: Producer defined)

Value	Definition
GO_XRF72	Borate Fusion, XRF, Ore Grade
GE_ICP90A50	Na2O2 Fusion, ICPAES
GO_ICP95A50	LiBO2 Fusion, minors/majors, ICPAES

S_method

An alphanumeric code that denotes the method and instrumentation used to measure sulfur concentration. NaN indicates that method information was not available. (Source: Producer defined)

Value	Definition
GE_CSA06V	Total Sulphur and Carbon, IR Combustion

Ag_method

An alphanumeric code that denotes the method and instrumentation used to measure silver concentration. (Source: Producer defined)

Value	Definition
GE_ICM40Q12	Ag results from GE_IMS40Q12 or GE_ICP40Q12
GE_IMS90A50	Na2O2 Fusion, HNO3, Inductively Coupled Plasma Mass Spectrometry (ICP-MS)

As_method

An alphanumeric code that denotes the method and instrumentation used to measure arsenic concentration. (Source: Producer defined)

Value	Definition
GE_IMS40Q12	4 Acid Digest Package (HCL/HCLO4/HF/HNO3), ICP-MS
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS
INAA	Neutron Activation

B_method

An alphanumeric code that denotes the method and instrumentation used to measure boron concentration. NaN indicates that method information was not available. (Source: Producer defined)

Value	Definition
GE_ICP90A50	Na2O2 Fusion, ICPAES

Ba_method

An alphanumeric code that denotes the method and instrumentation used to measure barium concentration. (Source: Producer defined)

Value	Definition
GO_ICP95A50	LiBO2 Fusion, minors/majors, ICPAES
GE_ICP90A50	Na2O2 Fusion, ICPAES
GE_ICP40Q12	4 Acid Digest (HCL/HCLO4/HF/HNO3), ICP

Be_method

An alphanumeric code that denotes the method and instrumentation used to measure beryllium concentration. (Source: Producer defined)

Value	Definition
GE_IMS40Q12	4 Acid Digest Package (HCL/HCLO4/HF/HNO3), ICP-MS
GE_ICP90A50	Na2O2 Fusion, ICPAES

Bi_method

An alphanumeric code that denotes the method and instrumentation used to measure bismuth concentration. (Source: Producer defined)

Value	Definition
GE_IMS40Q12	4 Acid Digest Package (HCL/HCLO4/HF/HNO3), ICP-MS
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS

Br_method

An alphanumeric code that denotes the method and instrumentation used to measure bromine concentration. NaN indicates that method information was not available. (Source: Producer defined)

Value	Definition
INAA	Neutron Activation

Cd_method

An alphanumeric code that denotes the method and instrumentation used to measure cadmium concentration. (Source: Producer defined)

Value	Definition
GE_IMS40Q12	4 Acid Digest Package (HCL/HCLO4/HF/HNO3), ICP-MS
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS

Co_method

An alphanumeric code that denotes the method and instrumentation used to measure cobalt concentration. (Source: Producer defined)

Value	Definition
GE_IMS95A50	LiBO2 Fusion, minors/majors, ICP-MS
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS
INAA	Neutron Activation

Cr_method

An alphanumeric code that denotes the method and instrumentation used to measure chromium concentration. (Source: Producer defined)

Value	Definition
GO_XRF72	Borate Fusion, XRF, Ore Grade
GE_ICP90A50	Na2O2 Fusion, ICPAES
GE_ICP40Q12	4 Acid Digest (HCL/HCLO4/HF/HNO3), ICP

Cs_method

An alphanumeric code that denotes the method and instrumentation used to measure caesium concentration. (Source: Producer defined)

Value	Definition
GE_IMS40Q12	4 Acid Digest Package (HCL/HCLO4/HF/HNO3), ICP-MS
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS
GE_IMS95A50	LiBO2 Fusion, minors/majors, ICP-MS

Cu_method

An alphanumeric code that denotes the method and instrumentation used to measure copper concentration. (Source: Producer defined)

Value	Definition
GE_ICP40Q12	4 Acid Digest (HCL/HCLO4/HF/HNO3), ICP
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS
GO_ICP90Q100	Ore grade Na2O2 Fusion, HNO3, ICPAES
GO_ICP42Q100	4 Acid Digest (HCL/HCLO4/HF/HNO3), ICP

Ga_method

An alphanumeric code that denotes the method and instrumentation used to measure gallium concentration. (Source: Producer defined)

Value	Definition
GE_IMS40Q12	4 Acid Digest Package (HCL/HCLO4/HF/HNO3), ICP-MS
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS

Ge_method

An alphanumeric code that denotes the method and instrumentation used to measure germanium concentration. (Source: Producer defined)

Value	Definition
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS

Hf_method

An alphanumeric code that denotes the method and instrumentation used to measure hafnium concentration. NaN indicates that method information was not available. (Source: Producer defined)

Value	Definition
GE_IMS40Q12	4 Acid Digest Package (HCL/HCLO4/HF/HNO3), ICP-MS
INAA	Neutron Activation

Hg_method

An alphanumeric code that denotes the method and instrumentation used to measure mercury concentration. NaN indicates that method information was not available. (Source: Producer defined)

Value	Definition
GE_CVA37A25	3 Acid Digest (HNO3/H2SO4/HCL)

In_method

An alphanumeric code that denotes the method and instrumentation used to measure indium concentration. (Source: Producer defined)

Value	Definition
GE_IMS40Q12	4 Acid Digest Package (HCL/HCLO4/HF/HNO3), ICP-MS
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS

Li_method

An alphanumeric code that denotes the method and instrumentation used to measure lithium concentration. (Source: Producer defined)

Value	Definition
GE_ICP40Q12	Na2O2 Fusion, HNO3, ICP-MS
GE_ICP90A50	Na2O2 Fusion, ICPAES

Mo_method

An alphanumeric code that denotes the method and instrumentation used to measure molybdenum concentration. (Source: Producer defined)

Value	Definition
GE_IMS40Q12	4 Acid Digest Package (HCL/HCLO4/HF/HNO3), ICP-MS
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS

Nb_method

An alphanumeric code that denotes the method and instrumentation used to measure niobium concentration. (Source: Producer defined)

Value	Definition
GE_IMS40Q12	4 Acid Digest Package (HCL/HCLO4/HF/HNO3), ICP-MS
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS

Ni_method

An alphanumeric code that denotes the method and instrumentation used to measure nickel concentration. (Source: Producer defined)

Value	Definition
GE_IMS95A50	LiBO2 Fusion, minors/majors, ICP-MS
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS

Pb_method

An alphanumeric code that denotes the method and instrumentation used to measure lead concentration. (Source: Producer defined)

Value	Definition
GE_IMS40Q12	4 Acid Digest Package (HCL/HCLO4/HF/HNO3), ICP-MS
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS

Rb_method

An alphanumeric code that denotes the method and instrumentation used to measure rubidium concentration. (Source: Producer defined)

Value	Definition
GE_IMS40Q12	4 Acid Digest Package (HCL/HCLO4/HF/HNO3), ICP-MS
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS

Sb_method

An alphanumeric code that denotes the method and instrumentation used to measure antimony concentration. (Source: Producer defined)

Value	Definition
GE_IMS40Q12	4 Acid Digest Package (HCL/HCLO4/HF/HNO3), ICP-MS
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS
INAA	Neutron Activation

Sc_method

An alphanumeric code that denotes the method and instrumentation used to measure scandium concentration. (Source: Producer defined)

Value	Definition
GE_IMS40Q12	4 Acid Digest Package (HCL/HCLO4/HF/HNO3), ICP-MS
GE_ICP90A50	Na2O2 Fusion, ICPAES

Se_method

An alphanumeric code that denotes the method and instrumentation used to measure selenium concentration. NaN indicates that method information was not available. (Source: Producer defined)

Value	Definition
GE_IMS40Q12	4 Acid Digest Package (HCL/HCLO4/HF/HNO3), ICP-MS
INAA	Neutron Activation

Sn_method

An alphanumeric code that denotes the method and instrumentation used to measure tin concentration. (Source: Producer defined)

Value	Definition
GE_IMS40Q12	4 Acid Digest Package (HCL/HCLO4/HF/HNO3), ICP-MS
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS

Sr_method

An alphanumeric code that denotes the method and instrumentation used to measure strontium concentration. (Source: Producer defined)

Value	Definition
GE_ICP40Q12	4 Acid Digest (HCL/HCLO4/HF/HNO3), ICP
GE_ICP90A50	Na2O2 Fusion, ICPAES

Ta_method

An alphanumeric code that denotes the method and instrumentation used to measure tantalum concentration. (Source: Producer defined)

Value	Definition
GE_IMS40Q12	4 Acid Digest Package (HCL/HCLO4/HF/HNO3), ICP-MS
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS

Te_method

An alphanumeric code that denotes the method and instrumentation used to measure tellurium concentration. NaN indicates that method information was not available. (Source: Producer defined)

Value	Definition
GE_IMS40Q12	4 Acid Digest Package (HCL/HCLO4/HF/HNO3), ICP-MS
INAA	Neutron Activation

Th_method

An alphanumeric code that denotes the method and instrumentation used to measure thorium concentration. (Source: Producer defined)

Value	Definition
GE_IMS40Q12	4 Acid Digest Package (HCL/HCLO4/HF/HNO3), ICP-MS
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS
GE_IMS95A50	LiBO2 Fusion, minors/majors, ICP-MS

Tl_method

An alphanumeric code that denotes the method and instrumentation used to measure thallium concentration. (Source: Producer defined)

Value	Definition
GE_IMS40Q12	4 Acid Digest Package (HCL/HCLO4/HF/HNO3), ICP-MS
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS

U_method

An alphanumeric code that denotes the method and instrumentation used to measure uranium concentration. (Source: Producer defined)

Value	Definition
GE_IMS95A50	LiBO2 Fusion, minors/majors, ICP-MS
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS

V_method

An alphanumeric code that denotes the method and instrumentation used to measure vanadium concentration. (Source: Producer defined)

Value	Definition
GO_XRF72	Borate Fusion, XRF, Ore Grade
GE_ICP90A50	Na2O2 Fusion, ICPAES
GE_IMS95A50	LiBO2 Fusion, minors/majors, ICP-MS

W_method

An alphanumeric code that denotes the method and instrumentation used to measure tungsten concentration. (Source: Producer defined)

Value	Definition
GE_IMS40Q12	4 Acid Digest Package (HCL/HCLO4/HF/HNO3), ICP-MS
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS
GE_IMS95A50	LiBO2 Fusion, minors/majors, ICP-MS

Zn_method

An alphanumeric code that denotes the method and instrumentation used to measure zinc concentration. (Source: Producer defined)

Value	Definition
GE_ICP90A50	Na2O2 Fusion, ICPAES
GE_ICP40Q12	4 Acid Digest (HCL/HCLO4/HF/HNO3), ICP
GO_ICP95A50	LiBO2 Fusion, minors/majors, ICPAES

Zr_method

An alphanumeric code that denotes the method and instrumentation used to measure zirconium concentration. (Source: Producer defined)

Value	Definition
INAA	Neutron Activation
GE_IMS95A50	LiBO2 Fusion, minors/majors, ICP-MS

La_method

An alphanumeric code that denotes the method and instrumentation used to measure lanthanum concentration. (Source: Producer defined)

Value	Definition
GE_IMS95A50	LiBO2 Fusion, minors/majors, ICP-MS
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS

Ce_method

An alphanumeric code that denotes the method and instrumentation used to measure cerium concentration. (Source: Producer defined)

Value	Definition
GE_IMS95A50	LiBO2 Fusion, minors/majors, ICP-MS
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS

Pr_method

An alphanumeric code that denotes the method and instrumentation used to measure praseodymium concentration. (Source: Producer defined)

Value	Definition
GE_IMS95A50	LiBO2 Fusion, minors/majors, ICP-MS
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS

Nd_method

An alphanumeric code that denotes the method and instrumentation used to measure neodymium concentration. (Source: Producer defined)

Value	Definition
GE_IMS95A50	LiBO2 Fusion, minors/majors, ICP-MS
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS

Sm_method

An alphanumeric code that denotes the method and instrumentation used to measure samarium concentration. (Source: Producer defined)

Value	Definition
GE_IMS95A50	LiBO2 Fusion, minors/majors, ICP-MS
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS

Eu_method

An alphanumeric code that denotes the method and instrumentation used to measure europium concentration. (Source: Producer defined)

Value	Definition
GE_IMS95A50	LiBO2 Fusion, minors/majors, ICP-MS
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS

Gd_method

An alphanumeric code that denotes the method and instrumentation used to measure gadolinium concentration. (Source: Producer defined)

Value	Definition
GE_IMS95A50	LiBO2 Fusion, minors/majors, ICP-MS
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS

Tb_method

An alphanumeric code that denotes the method and instrumentation used to measure terbium concentration. (Source: Producer defined)

Value	Definition
GE_IMS95A50	LiBO2 Fusion, minors/majors, ICP-MS
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS

Dy_method

An alphanumeric code that denotes the method and instrumentation used to measure dysprosium concentration. (Source: Producer defined)

Value	Definition
GE_IMS95A50	LiBO2 Fusion, minors/majors, ICP-MS
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS

Y_method

An alphanumeric code that denotes the method and instrumentation used to measure yttrium concentration. (Source: Producer defined)

Value	Definition
GE_IMS95A50	LiBO2 Fusion, minors/majors, ICP-MS
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS

Ho_method

An alphanumeric code that denotes the method and instrumentation used to measure holmium concentration. (Source: Producer defined)

Value	Definition
GE_IMS95A50	LiBO2 Fusion, minors/majors, ICP-MS
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS

Er_method

An alphanumeric code that denotes the method and instrumentation used to measure erbium concentration. (Source: Producer defined)

Value	Definition
GE_IMS95A50	LiBO2 Fusion, minors/majors, ICP-MS
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS

Tm_method

An alphanumeric code that denotes the method and instrumentation used to measure thulium concentration. (Source: Producer defined)

Value	Definition
GE_IMS95A50	LiBO2 Fusion, minors/majors, ICP-MS
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS

Yb_method

An alphanumeric code that denotes the method and instrumentation used to measure ytterbium concentration. (Source: Producer defined)

Value	Definition
GE_IMS95A50	LiBO2 Fusion, minors/majors, ICP-MS
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS

Lu_method

An alphanumeric code that denotes the method and instrumentation used to measure lutetium concentration. (Source: Producer defined)

Value	Definition
GE_IMS95A50	LiBO2 Fusion, minors/majors, ICP-MS
GE_IMS90A50	Na2O2 Fusion, HNO3, ICP-MS
GE_IMS40Q12	4 Acid Digest Package (HCL/HCLO4/HF/HNO3), ICP-MSs

Au_method

An alphanumeric code that denotes the method and instrumentation used to measure gold concentration. NaN indicates that method information was not available. (Source: Producer defined)

Value	Definition
INAA	Neutron Activation

Entity_and_Attribute_Overview: The first line of the csv file is a header line.
Entity_and_Attribute_Detail_Citation: U.S. Geological Survey

Who produced the data set?

Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
- Manda V. Au
- Denise Payan
- Amy Gartman
Who also contributed to the data set?
E.P. Reeves and D. Roerdink from the Department of Earth Science & Centre for Deep Sea Research, University of Bergen, Norway, and J.W. Jamieson and C. Gini from Department of Earth Sciences, Memorial University of Newfoundland, St. John’s, Canada are thanked for their help obtaining these samples.
To whom should users address questions about the data?

U.S. Geological Survey, Pacific Coastal and Marine Science Center

Attn: PCMSC Science Data Coordinator

2885 Mission Street
Santa Cruz, CA

831-427-4747 (voice)

pcmsc_data@usgs.gov

Why was the data set created?

These data serve to expand the knowledge and statistics for deep ocean marine mineral occurrences and composition within the global ocean.

How was the data set created?

From what previous works were the data drawn?
geochemistry (source 1 of 1)
SGS Minerals Laboratory, Burnaby, Canada, 2021, Geochemical Element Analysis.
Online Links:
- https://www.sgs.ca/en/mining/analytical-services/geochemistry
Type_of_Source_Media: geochemical analyses
Source_Contribution: geochemical analyses
How were the data generated, processed, and modified?
Date: 04-Jul-2019 (process 1 of 2)
Samples are push cores and were pushed into sediment by the ROV’s manipulator arm. Once recovered shipboard cores were frozen (2018-691-DD) or refrigerated (2019-624-FA) until return to shore. Samples were donated from Field Activity 2018-691-DD, and no USGS attendees were present. Amy Gartman attended 2019-624-FA.
Date: 03-Mar-2023 (process 2 of 2)
Results from lab analyses, detection limits, analytical method information, location data, cruise identification, and location data were combined into a comma-delimited text value document (LokisMohns_marine_mineral_geochemistry.csv). Oxide normalized concentrations were calculated when necessary. Data sources used in this process:
- geochemistry
What similar or related data should the user be aware of?

How reliable are the data; what problems remain in the data set?

How well have the observations been checked?
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. 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. Values of -9999 for concentration attributes indicate that no analysis was performed. Values of NaN and -9999 for method and detection limit attributes respectively indicate that no information was available. For this dataset, the CRM used include OREAS 70b, 134a, 520, 523, 524, 601, 621, 623, 751 and 753, NIST8607, GS314-2, and MP-2a. Accuracy is better than 5 % for Fe, Mn, Si, Al Mg, Ca, Na, K, S, As, Ba, Be, Bi, Cd, Co, Cu, Ga, Hf, Hg, In, Rb, Se, Sr, Ta, Te, Tl, U, W, Zr, La, Ce, Pr, Nd, and Sm; between 5 and 15 % for Ti, P, Ag, Cs, Ge, Li, Mo, Pb, Sb, Sc, Sn, Th, Zn, Eu, Gd, Tb, Dy, Y, Ho, Er, Tm, Yb, and Lu; and higher for Cr (34 %), Nb (28 %), and V (32 %). Precision was better than 5 % for Fe, Mn, Si, Al, Mg, Ca, Na, K, Ti, P, S, Ag, As, Ba, Bi, Co, Cs, Cu, Ga, Hf, Hg, In, Li, Mo, Pb, Rb, Sb, Sc, Se, Sn, Sr, Ta, Th, Tl, U, V, Zn, Zr, Pr, Sm, Gd, Dy, Y, Tm, Lu; between 5 and 15% for Be, Cd, Cr, Ni, Te, La, Ce, Nd, Tb, Ho, Er, Yb and higher for W (35 %).
How accurate are the geographic locations?
The horizontal accuracy for each sample was obtained from the ROV's Ultra Short Baseline Positioning System (USBL) navigation. Accuracy for this depth is approximately 20-50 m.
How accurate are the heights or depths?
A formal accuracy assessment of the vertical positional information in the dataset has not been conducted. The vertical accuracy was determined with the ROV's altimeter, which is accurate to less than 1 m.
Where are the gaps in the data? What is missing?
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.
How consistent are the relationships among the observations, including topology?
No formal logical accuracy tests were conducted.

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints	None
Use_Constraints	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.

Who distributes the data set? (Distributor 1 of 1)

U.S. Geological Survey - ScienceBase

Denver Federal Center, Building 810, Mail Stop 302
Denver, CO

1-888-275-8747 (voice)

sciencebase@usgs.gov
What's the catalog number I need to order this data set? These data are available in .csv format contained in a single file.
What legal disclaimers am I supposed to read?
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.

How can I download or order the data?

Availability in digital form:

Data format:	File contains table in .csv format in format comma-delimited text (version Microsoft Excel Version 2202 (Build 14931.20888 Click-to-Run)) Size: 0.0641
Network links:	https://www.sciencebase.gov/catalog/file/get/645d7506d34ec179a838b401 https://www.sciencebase.gov/catalog/item/645d7506d34ec179a838b401 https://doi.org/10.5066/P96D02FG

Cost to order the data: None.

What hardware or software do I need in order to use the data set?
These data can be viewed with Microsoft Excel or any text reader.

Who wrote the metadata?

Dates:: Last modified: 10-Jan-2024
Metadata author:: U.S. Geological Survey, Pacific Coastal and Marine Science Center

Attn: PCMSC Science Data Coordinator

2885 Mission Street
Santa Cruz, CA

831-427-4747 (voice)

pcmsc_data@usgs.gov
Metadata standard:: Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)

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