Geochemical major-oxide, minor-oxide, trace-element, and rare-earth-element data from rock samples collected in 2013 in the Ray Mountains area, Bettles A-1 and A-6 quadrangles, Alaska

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What does this data set describe?

Title:

Geochemical major-oxide, minor-oxide, trace-element, and rare-earth-element data from rock samples collected in 2013 in the Ray Mountains area, Bettles A-1 and A-6 quadrangles, Alaska

Abstract:

In 2012, the State of Alaska established its Strategic and Critical Minerals (SCM) Assessment project, a State-funded Capital Improvement Project (CIP), to evaluate Alaska's statewide potential for SCM resources. The project is being implemented by the Alaska Division of Geological & Geophysical Surveys (DGGS), and involves obtaining new airborne-geophysical, geological, and geochemical data. For decades, the Ray Mountains area of west-central Alaska has been explored for its potential mineral resources. To further assess the rare-earth-element (REE) potential of the State-selected and top-filed lands in the Ray Mountains area, mineral-resource geologists at DGGS carried out a helicopter-supported geological and geochemical resource assessment spanning the Beaver, Bettles, Livengood, and Tanana quadrangles. The results of this work highlighted anomalously high heavy-REE concentrations in panned concentrate samples from No Name Creek gravels, as well as variability of REE concentrations in the source plutons, specifically the Fort Hamlin Hills pluton. Consequently, the mineral-resource staff at DGGS undertook an additional resource assessment in the northern Fort Hamlin Hills area, part of the Bettles A-1 and A-6 quadrangles, from August 20 through 23, 2013, to augment the current geochemical data for the northern part of the Fort Hamlin Hills pluton (now designated the No Name pluton) and to better understand the petrogenesis of the granites and their contribution to the potential alluvial REE resource. The geochemistry dataset generated by this project is being released in digital format as .PDF and .CSV files. These files are available from the DGGS website at no charge.

Supplemental_Information:

The DGGS metadata standard extends the FGDC standard to include elements that are required to facilitate our internal data management. These elements, referred to as "layers," group and describe files that have intrinsic logical or topological relationships and correspond to subdirectories within the data distribution package. The metadata layer provides an FGDC metadata file and may include other documentation files. Attribute information for each data layer is described in this metadata file under the "Entity_and_Attribute_Information" section. Data layer contents:

border:    Outline of the study area.
rock-major-minor-oxide-trace-element-ree:    Major- and minor-oxide, trace-element, and rare-earth-element analysis of pulverized rock samples
rock-trace-element-ree:    Trace-element analysis of pulverized rock samples
slab-xrf-major-minor-oxide-trace-element:    Major- and minor-oxide and trace-element analysis of rock-slab samples

How should this data set be cited?
Tuzzolino, A.L., Freeman, L.K., and Newberry, R.J., 2014, Geochemical major-oxide, minor-oxide, trace-element, and rare-earth-element data from rock samples collected in 2013 in the Ray Mountains area, Bettles A-1 and A-6 quadrangles, Alaska: Raw Data File RDF 2014-17, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.
Online Links:
- <http://dx.doi.org/10.14509/27325>
Other_Citation_Details: 3 p.
What geographic area does the data set cover?

West_Bounding_Coordinate: -150.123602

East_Bounding_Coordinate: -150.045819

North_Bounding_Coordinate: 66.126818

South_Bounding_Coordinate: 66.097936
What does it look like?
Does the data set describe conditions during a particular time period?

Beginning_Date: 2013
Ending_Date: 2014
Currentness_Reference: ground condition
What is the general form of this data set?

Geospatial_Data_Presentation_Form: report,digital data
How does the data set represent geographic features?
1. How are geographic features stored in the data set?
  This is a point data set.
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 0.000001. Longitudes are given to the nearest 0.000001. Latitude and longitude values are specified in decimal degrees.
  The horizontal datum used is World Geodetic System of 1984.
  The ellipsoid used is WGS 84.
  The semi-major axis of the ellipsoid used is 6378137.
  The flattening of the ellipsoid used is 1/298.257223563.

How does the data set describe geographic features?

rdf2014-17-border.shp

Outline of the study area. (Source: Alaska Division of Geological & Geophysical Surveys)

rdf2014-17-rock-major-minor-oxide-trace-element-ree.csv, rdf2014-17-rock-major-minor-oxide-trace-element-ree-limits.csv

Major- and minor-oxide, trace-element, and rare-earth-element analysis of pulverized rock samples. (Source: Alaska Division of Geological & Geophysical Surveys)

SAMPLE

Label assigned to identify the sample. (Source: Alaska Division of Geological & Geophysical Surveys)

Generic example of a sample identifier: YYAAA9999X: YY=last two digits of year, AAA=geologist's initials (one to three characters), 9999=unique station number, X= optional alpha character which indicates that multiple samples were collected at a given location or that multiple observations were recorded in the project database. The initials used by the geologists who collected samples for this project are: AT = Amy L. Tuzzolino, LF = Larry K. Freeman, and RN = Rainer J. Newberry

LONGITUDE

Longitude, WGS84 (Source: Alaska Division of Geological & Geophysical Surveys)

Range of values
Minimum:	-150.0798009
Maximum:	-150.0458192
Units:	decimal degrees

LATITUDE

Latitude, WGS84 (Source: Alaska Division of Geological & Geophysical Surveys)

Range of values
Minimum:	66.1046245
Maximum:	66.12571483
Units:	decimal degrees

WEIGHT_KG

Sample weight (as received by the lab) in kilograms (Source: Alaska Division of Geological & Geophysical Surveys and ALS Minerals)

Range of values
Minimum:	0.98
Maximum:	3.42
Units:	kilograms

BATCH_NUMBER

Number provided by the laboratory to identify the samples and analyses included in the work order. (Source: ALS Minerals)

FA14007072

DESCRIPTION

Description of the sample (Source: Alaska Division of Geological & Geophysical Surveys)

Characters 1 to 254 of a brief sample or station description.

SiO2_pct

Silicon dioxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	76.6
Maximum:	80.3
Units:	percent

Al2O3_pct

Aluminum oxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	10.75
Maximum:	12.55
Units:	percent

Fe2O3_pct

Iron oxide (+3) values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	1.38
Maximum:	2.17
Units:	percent

CaO_pct

Calcium oxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	0.24
Maximum:	0.73
Units:	percent

MgO_pct

Magnesium oxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	0.11
Maximum:	0.31
Units:	percent

Na2O_pct

Sodium oxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	2.45
Maximum:	3.18
Units:	percent

K2O_pct

Potassium oxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	4.4
Maximum:	5.14
Units:	percent

Cr2O3_pct

Chromium oxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Value	Definition
-1	Below detection limit.

TiO2_pct

Titanium dioxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	0.09
Maximum:	0.24
Units:	percent

MnO_pct

Manganese oxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	0.03
Maximum:	0.06
Units:	percent

P2O5_pct

Phosphorus oxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	0.03
Maximum:	0.08
Units:	percent

SrO_pct

Strontium oxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.01
Maximum:	0.01
Units:	percent

BaO_pct

Barium oxide values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Lithium Metaborate/Lithium Tetraborate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.01
Maximum:	0.02
Units:	percent

LOI_pct

Loss on Ignition values measured in percent (pct); Method: Gravimetric (GRAV), Thermal decomposition furnace; Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	0.61
Maximum:	0.95
Units:	percent

Total_pct

Total values measured in percent (pct); Method: Calculation (Calculation); Lower detection limit = 0.01 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. Note: the reported values may be slightly above or below 100% due to uncertainties in the measurements or calculation assumptions. (Source: ALS Minerals)

Range of values
Minimum:	98.56
Maximum:	101.26
Units:	percent

Ba_ppm

Barium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	30.8
Maximum:	183.5
Units:	parts per million

Ce_ppm

Cerium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	62.4
Maximum:	148
Units:	parts per million

Cr_ppm

Chromium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	10
Maximum:	20
Units:	parts per million

Cs_ppm

Cesium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.01 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	26.2
Maximum:	70.8
Units:	parts per million

Dy_ppm

Dysprosium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.05 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	8.1
Maximum:	13.3
Units:	parts per million

Er_ppm

Erbium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.03 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	4.73
Maximum:	8.61
Units:	parts per million

Eu_ppm

Europium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.03 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	0.08
Maximum:	0.48
Units:	parts per million

Ga_ppm

Gallium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.1 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	18.3
Maximum:	21.7
Units:	parts per million

Gd_ppm

Gadolinium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.05 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	6.09
Maximum:	10.2
Units:	parts per million

Hf_ppm

Hafnium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	3.4
Maximum:	6.4
Units:	parts per million

Ho_ppm

Holmium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.01 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	1.62
Maximum:	2.84
Units:	parts per million

La_ppm

Lanthanum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	27.4
Maximum:	67.7
Units:	parts per million

Lu_ppm

Lutetium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.01 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	0.71
Maximum:	1.44
Units:	parts per million

Nb_ppm

Niobium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	19.1
Maximum:	28.7
Units:	parts per million

Nd_ppm

Neodymium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	25
Maximum:	54.3
Units:	parts per million

Pr_ppm

Praseodymium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.03 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	7.37
Maximum:	17.05
Units:	parts per million

Rb_ppm

Rubidium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	506
Maximum:	720
Units:	parts per million

Sm_ppm

Samarium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.03 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	6.61
Maximum:	12.15
Units:	parts per million

Sn_ppm

Tin values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	10
Maximum:	193
Units:	parts per million

Sr_ppm

Strontium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	10.8
Maximum:	45.7
Units:	parts per million

Ta_ppm

Tantalum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	3.1
Maximum:	4.8
Units:	parts per million

Tb_ppm

Terbium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.01 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	1.27
Maximum:	2.08
Units:	parts per million

Th_ppm

Thorium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.05 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	29.3
Maximum:	55.8
Units:	parts per million

Tl_ppm

Thallium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.5 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	1.9
Maximum:	2.9
Units:	parts per million

Tm_ppm

Thulium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.01 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	0.74
Maximum:	1.46
Units:	parts per million

U_ppm

Uranium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.05 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	5.92
Maximum:	11.75
Units:	parts per million

V_ppm

Vanadium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	7
Maximum:	12
Units:	parts per million

W_ppm

Tungsten values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	5
Maximum:	28
Units:	parts per million

Y_ppm

Yttrium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	48.3
Maximum:	88.3
Units:	parts per million

Yb_ppm

Ytterbium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 0.03 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	4.81
Maximum:	10
Units:	parts per million

Zr_ppm

Zirconium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium Metaborate Fusion; Lower detection limit = 2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	82
Maximum:	187
Units:	parts per million

rdf2014-17-rock-trace-element-ree.csv, rdf2014-17-rock-trace-element-ree-limits.csv

Trace-element analysis of pulverized rock samples. (Source: Alaska Division of Geological & Geophysical Surveys)

SAMPLE

Label assigned to identify the sample. (Source: Alaska Division of Geological & Geophysical Surveys)

LONGITUDE

Longitude, WGS84 (Source: Alaska Division of Geological & Geophysical Surveys)

Range of values
Minimum:	-150.0813021
Maximum:	-150.0559901
Units:	decimal degrees

LATITUDE

Latitude, WGS84 (Source: Alaska Division of Geological & Geophysical Surveys)

Range of values
Minimum:	66.10457819
Maximum:	66.12589782
Units:	decimal degrees

WEIGHT_KG

Sample weight (as received by the lab) in kilograms (Source: Alaska Division of Geological & Geophysical Surveys and ALS Minerals)

Range of values
Minimum:	0.25
Maximum:	1.65
Units:	kilograms

BATCH_NUMBER

Number provided by the laboratory to identify the samples and analyses included in the work order. (Source: ALS Minerals)

FA14007071

DESCRIPTION

Description of the sample (Source: Alaska Division of Geological & Geophysical Surveys)

Characters 1 to 254 of a brief sample or station description.

Ag_ppm

Silver values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.01 ppm; Upper detection limit = 100 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.01
Maximum:	0.37
Units:	parts per million

Al_pct

Aluminum values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.01 pct; Upper detection limit = 50 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	4.5
Maximum:	6.62
Units:	percent

As_ppm

Arsenic values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	3.8
Maximum:	187
Units:	parts per million

Ba_ppm_1

Barium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	10
Maximum:	230
Units:	parts per million

Ba_ppm_2

Range of values
Minimum:	13.2
Maximum:	229
Units:	parts per million

Be_ppm

Beryllium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.05 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	4.87
Maximum:	35.7
Units:	parts per million

Bi_ppm

Bismuth values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.01 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	1.89
Maximum:	24
Units:	parts per million

Ca_pct

Calcium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.01 pct; Upper detection limit = 50 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	0.02
Maximum:	0.27
Units:	percent

Cd_ppm

Cadmium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.02 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.02
Maximum:	0.16
Units:	parts per million

Ce_ppm_1

Cerium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.01 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	35.1
Maximum:	152.5
Units:	parts per million

Ce_ppm_2

Range of values
Minimum:	37.7
Maximum:	140
Units:	parts per million

Co_ppm

Cobalt values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	0.4
Maximum:	2.3
Units:	parts per million

Cr_ppm_1

Chromium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	4
Maximum:	10
Units:	parts per million

Cr_ppm_2

Range of values
Minimum:	10
Maximum:	10
Units:	parts per million

Cs_ppm_1

Cesium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.05 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	5.05
Maximum:	82.6
Units:	parts per million

Cs_ppm_2

Range of values
Minimum:	5.6
Maximum:	83.7
Units:	parts per million

Cu_ppm

Copper values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	1.4
Maximum:	34.6
Units:	parts per million

Dy_ppm_1

Dysprosium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.05 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	2.17
Maximum:	5.29
Units:	parts per million

Dy_ppm_2

Range of values
Minimum:	5.72
Maximum:	11.7
Units:	parts per million

Er_ppm_1

Erbium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.03 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	0.99
Maximum:	2.46
Units:	parts per million

Er_ppm_2

Range of values
Minimum:	3.43
Maximum:	7.34
Units:	parts per million

Eu_ppm_1

Europium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.03 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	0.09
Maximum:	0.41
Units:	parts per million

Eu_ppm_2

Range of values
Minimum:	0.13
Maximum:	0.37
Units:	parts per million

Fe_pct

Iron values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.01 pct; Upper detection limit = 50 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	0.82
Maximum:	3.02
Units:	percent

Ga_ppm_1

Gallium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.05 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	18.3
Maximum:	31.3
Units:	parts per million

Ga_ppm_2

Range of values
Minimum:	16.6
Maximum:	28.7
Units:	parts per million

Gd_ppm_1

Gadolinium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.05 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	2.37
Maximum:	6.99
Units:	parts per million

Gd_ppm_2

Range of values
Minimum:	4.01
Maximum:	9.5
Units:	parts per million

Ge_ppm

Germanium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.05 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	0.11
Maximum:	0.25
Units:	parts per million

Hf_ppm_1

Hafnium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.1 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	1.3
Maximum:	3.8
Units:	parts per million

Hf_ppm_2

Range of values
Minimum:	2
Maximum:	5
Units:	parts per million

Ho_ppm_1

Holmium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.01 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	0.37
Maximum:	0.91
Units:	parts per million

Ho_ppm_2

Range of values
Minimum:	1.16
Maximum:	2.39
Units:	parts per million

In_ppm

Indium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.005 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	0.072
Maximum:	1.99
Units:	parts per million

K_pct

Potassium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.01 pct; Upper detection limit = 10 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	0.2
Maximum:	4.73
Units:	percent

La_ppm_1

Lanthanum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	15.5
Maximum:	75.2
Units:	parts per million

La_ppm_2

Range of values
Minimum:	16.3
Maximum:	62.7
Units:	parts per million

Li_ppm

Lithium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	48.4
Maximum:	386
Units:	parts per million

Lu_ppm_1

Lutetium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.01 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	0.16
Maximum:	0.34
Units:	parts per million

Lu_ppm_2

Range of values
Minimum:	0.49
Maximum:	1.12
Units:	parts per million

Mg_pct

Magnesium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.01 pct; Upper detection limit = 50 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	0.05
Maximum:	0.12
Units:	percent

Mn_ppm

Manganese values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 5 ppm; Upper detection limit = 100000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	147
Maximum:	628
Units:	parts per million

Mo_ppm

Molybdenum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.05 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	0.23
Maximum:	3.66
Units:	parts per million

Na_pct

Sodium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.01 pct; Upper detection limit = 10 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	0.06
Maximum:	1.96
Units:	percent

Nb_ppm_1

Niobium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.1 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	12.6
Maximum:	21.7
Units:	parts per million

Nb_ppm_2

Range of values
Minimum:	12.7
Maximum:	23.4
Units:	parts per million

Nd_ppm_1

Neodymium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	13.2
Maximum:	55.3
Units:	parts per million

Nd_ppm_2

Range of values
Minimum:	14.9
Maximum:	50.9
Units:	parts per million

Ni_ppm

Nickel values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	1
Maximum:	2.4
Units:	parts per million

P_ppm

Phosphorus values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	110
Maximum:	310
Units:	parts per million

Pb_ppm

Lead values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	5.9
Maximum:	32.4
Units:	parts per million

Pr_ppm_1

Praseodymium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.03 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	3.9
Maximum:	16.5
Units:	parts per million

Pr_ppm_2

Range of values
Minimum:	4.25
Maximum:	15.05
Units:	parts per million

Rb_ppm_1

Rubidium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	46.1
Maximum:	970
Units:	parts per million

Rb_ppm_2

Range of values
Minimum:	50.5
Maximum:	1020
Units:	parts per million

Re_ppm

Rhenium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.002 ppm; Upper detection limit = 50 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Value	Definition
-1	Below detection limit.

S_pct

Sulfur values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.01 pct; Upper detection limit = 10 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Value	Definition
-1	Below detection limit.

Sb_ppm

Antimony values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.05 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	0.21
Maximum:	48.6
Units:	parts per million

Sc_ppm

Scandium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	2.2
Maximum:	5.6
Units:	parts per million

Se_ppm

Selenium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 1 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Value	Definition
-1	Below detection limit.

Sm_ppm_1

Samarium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.03 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	3.48
Maximum:	11.1
Units:	parts per million

Sm_ppm_2

Range of values
Minimum:	3.87
Maximum:	10.65
Units:	parts per million

Sn_ppm_1

Tin values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.2 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	16.2
Maximum:	187.5
Units:	parts per million

Sn_ppm_2

Range of values
Minimum:	19
Maximum:	247
Units:	parts per million

Sr_ppm_1

Strontium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	4.7
Maximum:	52.1
Units:	parts per million

Sr_ppm_2

Range of values
Minimum:	4.7
Maximum:	53.2
Units:	parts per million

Ta_ppm_1

Tantalum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.05 ppm; Upper detection limit = 100 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	2.53
Maximum:	4.57
Units:	parts per million

Ta_ppm_2

Range of values
Minimum:	2.9
Maximum:	5.4
Units:	parts per million

Tb_ppm_1

Terbium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.01 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	0.41
Maximum:	1.03
Units:	parts per million

Tb_ppm_2

Range of values
Minimum:	0.83
Maximum:	1.77
Units:	parts per million

Te_ppm

Tellurium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.05 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.17
Maximum:	0.17
Units:	parts per million

Th_ppm_1

Thorium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	15.7
Maximum:	53.4
Units:	parts per million

Th_ppm_2

Range of values
Minimum:	18.2
Maximum:	52.8
Units:	parts per million

Ti_pct

Titanium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.005 pct; Upper detection limit = 10 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	0.021
Maximum:	0.078
Units:	percent

Tl_ppm_1

Thallium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.02 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	0.24
Maximum:	4.17
Units:	parts per million

Tl_ppm_2

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	1.9
Maximum:	3.1
Units:	parts per million

Tm_ppm_1

Thulium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.01 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	0.17
Maximum:	0.36
Units:	parts per million

Tm_ppm_2

Range of values
Minimum:	0.54
Maximum:	1.24
Units:	parts per million

U_ppm_1

Uranium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	3.6
Maximum:	10.8
Units:	parts per million

U_ppm_2

Range of values
Minimum:	4.44
Maximum:	11.6
Units:	parts per million

V_ppm_1

Vanadium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	2
Maximum:	8
Units:	parts per million

V_ppm_2

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	5
Maximum:	11
Units:	parts per million

W_ppm_1

Tungsten values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	3.2
Maximum:	35.7
Units:	parts per million

W_ppm_2

Range of values
Minimum:	4
Maximum:	41
Units:	parts per million

Y_ppm_1

Yttrium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.1 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	11
Maximum:	28.5
Units:	parts per million

Y_ppm_2

Range of values
Minimum:	33.6
Maximum:	70.3
Units:	parts per million

Yb_ppm_1

Ytterbium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.03 ppm; Upper detection limit = 1000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	1.18
Maximum:	2.42
Units:	parts per million

Yb_ppm_2

Range of values
Minimum:	3.6
Maximum:	7.61
Units:	parts per million

Zn_ppm

Zinc values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	15
Maximum:	150
Units:	parts per million

Zr_ppm_1

Zirconium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy - Mass Spectrometry (ICP-AES-MS), HF-HNO3 -HClO4 Acid Digestion, HCl Leach; Lower detection limit = 0.5 ppm; Upper detection limit = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	29.7
Maximum:	96.2
Units:	parts per million

Zr_ppm_2

Range of values
Minimum:	47
Maximum:	143
Units:	parts per million

rdf2014-17-slab-xrf-major-minor-oxide-trace-element.csv, rdf2014-17-slab-xrf-major-minor-oxide-trace-element-limits.csv

Major- and minor-oxide and trace-element analysis of rock-slab samples. (Source: Alaska Division of Geological & Geophysical Surveys)

SAMPLE

Label assigned to identify the sample. (Source: Alaska Division of Geological & Geophysical Surveys)

LONGITUDE

Longitude, WGS84 (Source: Alaska Division of Geological & Geophysical Surveys)

Range of values
Minimum:	-150.1236024
Maximum:	-150.0564872
Units:	decimal degrees

LATITUDE

Latitude, WGS84 (Source: Alaska Division of Geological & Geophysical Surveys)

Range of values
Minimum:	66.09793636
Maximum:	66.12681816
Units:	decimal degrees

DESCRIPTION

Description of the sample (Source: Alaska Division of Geological & Geophysical Surveys)

Characters 1 to 254 of a brief sample or station description.

MAP_UNIT

We indicate our interpretation of the geologic map unit associated with rock samples. Map unit names are derived from nomenclature or map unit labeling provided in pre-existing literature.. (Source: Alaska Division of Geological & Geophysical Surveys)

Value	Definition
Kgr - No Name Creek Pluton	Field context and/or geochemical analysis indicate that this sample is associated with the Kg - No Name Creek pluton described in Tuzzolino, A.L., Newberry, R.J., and Freeman, L.K., 2013, Rare-earth-element (REE) potential in the Ray Mountains area, central Alaska (poster): Alaska Miners Association Annual Convention, November 4-10, 2013: Alaska Division of Geological & Geophysical Surveys, 1 sheet.
MzPzmr(?) - Ruby Terrane metabasite	Field context and/or geochemical analysis indicate that this sample is associated with the MzPzmr unit described in Patton, W.W., Jr., Wilson, F.H., Labay, K.A., and Shew, Nora, 2009, Geologic map of the Yukon-Koyukuk Basin, Alaska: U.S. Geological Survey Scientific Investigations Map 2909, 2 sheets, scale 1:500,000.
Tb - Basalt flows (Oligocene)	Field context and/or geochemical analysis indicate that this sample is associated with the Tb unit described in Albanese, M.D., 1987, A basalt flow in the Fort Hamlin Hills, Bettles A-1 Quadrangle, Alaska: Alaska Division of Geological & Geophysical Surveys Public Data File 87-25, 11 p.

SiO2_pct

Silicon dioxide values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 0.1 pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

Range of values
Minimum:	45.2
Maximum:	76.8
Units:	percent

Al2O3_pct

Aluminum oxide values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 0.05 pct; Upper detection limit = 75 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

Range of values
Minimum:	12.6
Maximum:	19
Units:	percent

BaO_pct

Barium oxide values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 0.03 pct; Upper detection limit = 75 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

Range of values
Minimum:	0.0086
Maximum:	0.0746
Units:	percent

CaO_pct

Calcium oxide values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 0.02 pct; Upper detection limit = 75 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

Range of values
Minimum:	0.3
Maximum:	14
Units:	percent

FeO_pct

Iron oxide (+2) values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 0.03 pct; Upper detection limit = 75 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

Range of values
Minimum:	0.238
Maximum:	12.1
Units:	percent

K2O_pct

Potassium oxide values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 0.02 pct; Upper detection limit = 75 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

Range of values
Minimum:	0.0672
Maximum:	6
Units:	percent

MgO_pct

Magnesium oxide values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 0.05 pct; Upper detection limit = 75 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

Range of values
Minimum:	0.0948
Maximum:	9.83
Units:	percent

MnO_pct

Manganese oxide values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 0.03 pct; Upper detection limit = 75 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

Range of values
Minimum:	0.0053
Maximum:	0.235
Units:	percent

Na2O_pct

Sodium oxide values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 0.02 pct; Upper detection limit = 75 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

Range of values
Minimum:	1.21
Maximum:	4.85
Units:	percent

P2O5_pct

Phosphorus oxide values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 0.03 pct; Upper detection limit = 75 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

Range of values
Minimum:	0.0168
Maximum:	0.518
Units:	percent

TiO2_pct

Titanium dioxide values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 0.02 pct; Upper detection limit = 75 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

Range of values
Minimum:	0.0239
Maximum:	3.11
Units:	percent

Cl_pct

Chlorine values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 0.01 pct; Upper detection limit = 10 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

Range of values
Minimum:	0.00387
Maximum:	0.178
Units:	percent

F_pct

Fluorine values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 0.01 pct; Upper detection limit = 10 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

Value	Definition
NULL	Blank (NULL) field values may indicate that either the chemical species was not analyzed or that it was measured but found to be below detection limits.

Range of values
Minimum:	0.115
Maximum:	0.115
Units:	percent

S_pct

Sulfur values measured in percent (pct); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 0.007 pct; Upper detection limit = 50 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

Range of values
Minimum:	0.00328
Maximum:	0.0179
Units:	percent

Total_pct

Total values measured in percent (pct); Method: Calculation (Calculation); Lower detection limit = pct; Upper detection limit = 100 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. Note: the reported values may be slightly above or below 100% due to uncertainties in the measurements or calculation assumptions. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

Range of values
Minimum:	99.8
Maximum:	100
Units:	percent

As_ppm

Arsenic values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 4 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

Value	Definition
NULL	Blank (NULL) field values may indicate that either the chemical species was not analyzed or that it was measured but found to be below detection limits.

Range of values
Minimum:	3
Maximum:	33
Units:	parts per million

Ce_ppm

Cerium values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 20 ppm; Upper detection limit = 500000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

Range of values
Minimum:	9
Maximum:	81.2
Units:	parts per million

Co_ppm

Cobalt values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 10 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

Value	Definition
NULL	Blank (NULL) field values may indicate that either the chemical species was not analyzed or that it was measured but found to be below detection limits.

Range of values
Minimum:	31
Maximum:	104
Units:	parts per million

Cr_ppm

Chromium values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 30 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

Value	Definition
NULL	Blank (NULL) field values may indicate that either the chemical species was not analyzed or that it was measured but found to be below detection limits.

Range of values
Minimum:	83
Maximum:	525
Units:	parts per million

Cu_ppm

Copper values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 120 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

Value	Definition
NULL	Blank (NULL) field values may indicate that either the chemical species was not analyzed or that it was measured but found to be below detection limits.

Range of values
Minimum:	167
Maximum:	167
Units:	parts per million

Ga_ppm

Gallium values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 10 ppm; Upper detection limit = 100000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

Range of values
Minimum:	13
Maximum:	36
Units:	parts per million

Nb_ppm

Niobium values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 1 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

Range of values
Minimum:	0.8
Maximum:	43.3
Units:	parts per million

Ni_ppm

Nickel values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 7 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

Range of values
Minimum:	33
Maximum:	322
Units:	parts per million

Pb_ppm

Lead values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 4 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

Value	Definition
NULL	Blank (NULL) field values may indicate that either the chemical species was not analyzed or that it was measured but found to be below detection limits.

Range of values
Minimum:	19
Maximum:	58
Units:	parts per million

Rb_ppm

Rubidium values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 1 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

Range of values
Minimum:	0.2
Maximum:	567.8
Units:	parts per million

Sn_ppm

Tin values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 4 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

Value	Definition
NULL	Blank (NULL) field values may indicate that either the chemical species was not analyzed or that it was measured but found to be below detection limits.

Range of values
Minimum:	45
Maximum:	45
Units:	parts per million

Sr_ppm

Strontium values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 1 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

Range of values
Minimum:	14
Maximum:	484.1
Units:	parts per million

Th_ppm

Thorium values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 2 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

Value	Definition
NULL	Blank (NULL) field values may indicate that either the chemical species was not analyzed or that it was measured but found to be below detection limits.

Range of values
Minimum:	16
Maximum:	16
Units:	parts per million

U_ppm

Uranium values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 1 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

Value	Definition
NULL	Blank (NULL) field values may indicate that either the chemical species was not analyzed or that it was measured but found to be below detection limits.

Range of values
Minimum:	22
Maximum:	45
Units:	parts per million

V_ppm

Vanadium values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 25 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

Value	Definition
NULL	Blank (NULL) field values may indicate that either the chemical species was not analyzed or that it was measured but found to be below detection limits.

Range of values
Minimum:	201
Maximum:	528
Units:	parts per million

W_ppm

Tungsten values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 8 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

Value	Definition
NULL	Blank (NULL) field values may indicate that either the chemical species was not analyzed or that it was measured but found to be below detection limits.

Range of values
Minimum:	59
Maximum:	59
Units:	parts per million

Y_ppm

Yttrium values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 1 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

Range of values
Minimum:	12
Maximum:	89.2
Units:	parts per million

Zn_ppm

Zinc values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 8 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

Range of values
Minimum:	12
Maximum:	176
Units:	parts per million

Zr_ppm

Zirconium values measured in parts per million (ppm); Method: X-Ray Fluorescence (SLAB-XRF); Lower detection limit = 9 ppm; Upper detection limit = 750000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Advanced Instrumentation Laboratory at the University of Alaska Fairbanks)

Range of values
Minimum:	43
Maximum:	225.4
Units:	parts per million

Who produced the data set?

Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
- Tuzzolino, A.L.
- Freeman, L.K.
- Newberry, R.J.
Who also contributed to the data set?

Location data were, in part, prepared by Erik Bachmann. Geochemical analyses were assisted by Alicja Wypych. Analyses were funded by the State of Alaska's Strategic and Critical Minerals Assessment CIP, which is funded by the Alaska State Legislature and managed by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys.
To whom should users address questions about the data?

Alaska Division of Geological & Geophysical Surveys
GIS Manager
3354 College Road
Fairbanks, AK 99709-3707
USA

(907)451-5020 (voice)
dggsgis@alaska.gov

Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays

Why was the data set created?

In 2012, the State of Alaska established its Strategic and Critical Minerals (SCM) Assessment project, a State-funded Capital Improvement Project (CIP), to evaluate Alaska's statewide potential for SCM resources. The project is being implemented by the Alaska Division of Geological & Geophysical Surveys (DGGS), and involves obtaining new airborne-geophysical, geological, and geochemical data. For decades, the Ray Mountains area of west-central Alaska has been explored for its potential mineral resources. To further assess the rare-earth-element (REE) potential of the State-selected and top-filed lands in the Ray Mountains area, mineral-resource geologists at DGGS carried out a helicopter-supported geological and geochemical resource assessment spanning the Beaver, Bettles, Livengood, and Tanana quadrangles. The results of this work highlighted anomalously high heavy-REE concentrations in panned concentrate samples from No Name Creek gravels, as well as variability of REE concentrations in the source plutons, specifically the Fort Hamlin Hills pluton. Consequently, the mineral-resource staff at DGGS undertook an additional resource assessment in the northern Fort Hamlin Hills area, part of the Bettles A-1 and A-6 quadrangles, from August 20 through 23, 2013, to augment the current geochemical data for the northern part of the Fort Hamlin Hills pluton (now designated the No Name pluton) and to better understand the petrogenesis of the granites and their contribution to the potential alluvial REE resource. The geochemistry dataset generated by this project is being released in digital format as .PDF and .CSV files. These files are available from the DGGS website at no charge.

How was the data set created?

From what previous works were the data drawn?
How were the data generated, processed, and modified?

Date: 2013 (process 1 of 5)
Sample collection - Samples of visibly mineralized rock or those containing features associated with mineralization were preferentially collected and later analyzed for their trace-element geochemistry. Samples are typically 'grab' samples, which were randomly collected at a location. Igneous and meta-igneous rocks showing minor alteration or weathering were collected for major-oxide, minor-oxide, and trace-element analyses to determine bulk rock compositions, or to identify the tectonic setting of a sample's protolith from petrogenetically important trace elements. Several fine-grained igneous and meta-igneous rocks were collected for 'slab' X-ray fluorescence (slab XRF) petrographic analysis. Location data were collected using Trimble Juno T41/5 WAAS-enabled GPS devices running ArcGIS for Windows Mobile. Data were merged into an ArcGIS geodatabase.

Date: 2013 (process 2 of 5)
Sample preparation - Rock samples were prepared by ALS Minerals in accordance with their PREP-31 package, which involves crushing the entire sample to greater than 70 percent passing -10 mesh (2 mm), then splitting off 250 grams and pulverizing the split to greater than 85 percent passing 75 microns. Prior to crushing, samples for whole-rock analyses were trimmed by DGGS staff to remove weathering, and cut surfaces were sanded to remove any saw metal. Rock samples that were collected for slab XRF analysis were cut into nominal 4-cm-diameter disks using a tile saw. The surfaces to be analyzed were polished to a smooth, uniform surface using 60 grit and 220 grit compound on a lapidary wheel.

Date: 2013 (process 3 of 5)
Analysis of major- and trace-element compositions - Trace-element compositions for rock samples were determined using four-acid digestion, followed by inductively coupled plasma-mass spectroscopy (ICP-MS) (ALS Minerals method ME-MS61, and ME-MS61r). Considering REEs may not be totally soluble in the aforementioned method, trace-element compositions were also determined using lithium metaborate fusion digestion, again followed by ICP-MS (ALS Minerals method ME-MS81).

Date: 2013 (process 4 of 5)
Whole-rock geochemistry analysis - Major and minor oxides for whole-rock geochemistry samples were analyzed by lithium metaborate fusion digestion and ICP-AES (ALS Minerals method ME-ICP06), loss on ignition was determined via OA-GRA05 method. Trace elements, including rare-earth elements, were determined using lithium metaborate fusion digestion, and ICP-MS (ALS Minerals method ME-MS81). Metals were determined by four-acid digestion and ICP-AES (ALS Minerals method ME-ICP61).

Date: 2013 (process 5 of 5)
Slab XRF analysis - For slab XRF samples, polished sample slabs were directly analyzed using the PANalytical Axios wavelength-dispersive XRF and SuperQâ„¢ software at the University of Alaska Fairbanks. Nb, Rb, Sr, Y, and Zr were measured using the 37mmRbSrYZr analytical routine; other elements were measured with the IQ+37mmVac analytical routine. The 37mmRbSrYZr routine uses specific predetermined peak and background positions for which X-ray intensities are measured for 2-800 seconds (depending on the element). The intensity of the Rh Compton peak is used to estimate mass-absorption coefficients (MACs) for both unknowns and well-characterized natural standards. Peak intensities are computed and converted to concentrations using calibration curves employing at least ten natural rock standards. These procedures are routinely checked by analysis of secondary natural standards that were not employed in making the calibration curves. Elemental abundances are typically within 2-5 percent of the amount present for concentrations greater than 10 times the detection limit; within 5-10 percent of the amount present for concentrations 4-10 times the detection limit, and within 30 percent of the amount present for concentrations near the detection limit. The IQ37mmVac program scans over a series of energies corresponding to a range from Ce K-alpha to O K-alpha. Peak heights and backgrounds, and X-ray elemental interferences are picked with the software and checked manually to ensure quality control. Elemental abundances for all elements with atomic numbers between 8 and 92 are estimated from artificial standards; these estimations are used to calculate MACs for each element present above the detection limit. Revised concentrations are employed to calculate revised MACs until a stable solution is determined. The software is routinely checked using pressed pellets of well-characterized natural rock standards. Elemental abundances are within 1-2 percent of the amount present for major elements, 2-5 percent of the amount present for minor elements, and 5-10 percent of the amount present for trace elements.
What similar or related data should the user be aware of?
Bachmann, E.N., Blessington, M.J., Freeman, L.K., Newberry, R.J., Tuzzolino, A.L., Wright, T.C., and Wylie, William, 2013, Geochemical major-oxide, minor-oxide, trace-element, and rare-earth-element data from rocks and stream sediments collected in 2012 in the Ray Mountains area, Beaver, Bettles, Livengood, and Tanana quadrangles, Alaska: Raw Data File RDF 2013-5, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.
Online Links:
- <http://dx.doi.org/10.14509/25386>
Other_Citation_Details: 4 p
Blessington, M.J., Reioux, D.A., and Werdon, M.B., 2013, Analyses of historic U.S. Bureau of Mines rock and heavy mineral concentrate samples for geochemical trace-element and rare-earth element data--Ray Mountains and Kanuti-Hodzana uplands area, Alaska: Raw Data File RDF 2013-7, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.
Online Links:
- <http://dx.doi.org/10.14509/25581>
Other_Citation_Details: 2 p

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

How well have the observations been checked?
In addition to ALS Minerals' internal quality-control program accredited to ISO/IEC 17025-2005 standards, DGGS monitored analysis quality by inserting igneous-rock and ore-geochemical-pulp standards with known compositions into the sample roster for every sample batch. In the case of slab XRF analysis, we report measured values which are above or below instrument detection limits when they are provided to us by the originating lab. Null values in the slab XRF tables indicate that the chemical species was below detection limits. NULL values in the tables from ALS minerals tables indicate that the analysis was not ordered for the sample. Users should contact the originating labs for additional information about detection limits and reporting procedures. Brief sample descriptions are based principally on field observations with some thin-section details added.
How accurate are the geographic locations?
Location data were collected using Trimble Juno T41/5 WAAS-enabled GPS devices running ArcGIS for Windows Mobile. Data were merged into an ArcGIS geodatabase. WAAS-enabled GPS devices have a reported error of about 1 m; depending on degradation of the WAAS and GPS signals the horizontal position error of sample locations in this report is in the range of 1 to 10 meters. Latitude and longitude are reported in the WGS 1984 datum.
How accurate are the heights or depths?
Where are the gaps in the data? What is missing?
This dataset provides the analytical results for all of the samples that were submitted for geochemical analysis.
How consistent are the relationships among the observations, including topology?
not applicable

How can someone get a copy of the data set?

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

Access_Constraints:
This report, map, and/or dataset is available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below).

Use_Constraints:
Any hard copies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. The user specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. The State of Alaska makes no express or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.

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

Alaska Division of Geological & Geophysical Surveys
3354 College Road
Fairbanks, AK 99709-3707
USA

(907)451-5020 (voice)
(907)451-5050 (FAX)
dggspubs@alaska.gov

Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays

Contact_Instructions:
Please view our website (<http://www.dggs.alaska.gov>) for the latest information on available data. Please contact us using the e-mail address provided above when possible.
What's the catalog number I need to order this data set?
RDF 2014-17
What legal disclaimers am I supposed to read?

The State of Alaska makes no expressed or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.
How can I download or order the data?
- Availability in non-digital form:
  DGGS publications are available as free online downloads or you may purchase paper hard-copies or digital files on CD/DVD or other digital storage media by mail, phone, fax, or email from the DGGS Fairbanks office. To purchase this or other printed reports and maps, contact DGGS by phone (907-451-5020), e-mail (dggspubs@alaska.gov), or fax (907-451-5050). Payment accepted: Cash, check, money order, VISA, or MasterCard. Turnaround time is 1-2 weeks unless special arrangements are made and an express fee is paid. Shipping charge will be the actual cost of postage and will be added to the total amount due. Contact us for the exact shipping amount.
- Cost to order the data: Contact DGGS for current pricing
- Availability in digital form:
  
  Data format: ASCII tabular files
  
  Network links: <http://dx.doi.org/10.14509/27325>
- Cost to order the data: Free download

Who wrote the metadata?

Dates:

Last modified: 06-Aug-2014

Metadata author:

Alaska Division of Geological & Geophysical Surveys
Metadata Manager
3354 College Road
Fairbanks, AK 99709-3707
USA

(907)451-5020 (voice)

Metadata standard:

FGDC Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)

Metadata extensions used:

<http://www.dggs.alaska.gov/metadata/dggs.ext>

Generated by mp version 2.9.21 on Wed Aug 6 12:51:48 2014

Data format:	ASCII tabular files
Network links:	<http://dx.doi.org/10.14509/27325>