Major-oxide and trace-element geochemical data from rocks collected in 2014 in the Wrangellia mineral assessment area, Talkeetna Mountains C-4, C-3, and B-4 quadrangles, Alaska

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What does this data set describe?

Title:

Major-oxide and trace-element geochemical data from rocks collected in 2014 in the Wrangellia mineral assessment area, Talkeetna Mountains C-4, C-3, and B-4 quadrangles, Alaska

Abstract:

The mineral-resources group from the Alaska Division of Geological & Geophysical Surveys (DGGS) carried out a geologic mapping project in the Talkeetna Mountains C-4, C-3, and B-4 quadrangles from July 23 through August 3, 2014. This project is a part of a multi-year project focusing on improving the publicly-available geological and geochemical data and assessing the mineral potential of the less-explored extension of the western Wrangellia terrane. This program of geologic mapping and rock sampling was conducted as part of the U.S. Geological Survey National Cooperative Geologic Mapping Program and the state of Alaska's Strategic Minerals Assessment project, an initiative designed to evaluate Alaska's potential for rare-earth elements, PGEs (platinum group elements), and other similarly supply-challenged resources. Highlights of this project include identification, sampling, and characterization of a broad section of the Wrangellia stratigraphy, including Late Triassic rocks of the Ni-Cu-Co-PGE- and Cu-Ag-mineralized Wrangellia large igneous province as well as modern geochemical characterizations of skarn, vein, and basalt-hosted Cu mineralization. This data set includes four samples with elevated gold, ranging from 0.5 to 0.875 ppm, with one of these samples also containing elevated Cu (1.18 percent). Twelve samples have elevated copper, ranging from 1000 to 7900 parts per million, and two samples contain a significant copper spike (13 and 19.65 percent) and elevated silver (42 and 48 parts per million). The analytical data tables associated with this report are being released in digital format as comma-delimited text (CSV) files.

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; includes magnetic susceptibility measurements
rock-trace-element-ree:    Trace-element analysis of pulverized rock samples; includes magnetic susceptibility measurements

How should this data set be cited?
Wypych, Alicja, Twelker, Evan, Freeman, L.K., Lande, Lauren, Newberry, R.J., Reioux, D.A., and Sicard, K.R., 2014, Major-oxide and trace-element geochemical data from rocks collected in 2014 in the Wrangellia mineral assessment area, Talkeetna Mountains C-4, C-3, and B-4 quadrangles, Alaska: Raw Data File RDF 2014-22, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.
Online Links:
- <http://dx.doi.org/10.14509/29140>
Other_Citation_Details: 4 p.
What geographic area does the data set cover?

West_Bounding_Coordinate: -149.032178

East_Bounding_Coordinate: -148.350913

North_Bounding_Coordinate: 62.745803

South_Bounding_Coordinate: 62.347820
What does it look like?
Does the data set describe conditions during a particular time period?

Calendar_Date: 2014
Currentness_Reference: ground condition
What is the general form of this data set?

Geospatial_Data_Presentation_Form: 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 0.00001. Longitudes are given to the nearest 0.00001. 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?

rdf2014-22-border.shp

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

rdf2014-22-rock-major-minor-oxide-trace-element-ree.csv, rdf2014-22-rock-major-minor-oxide-trace-element-ree-limits.csv

Major- and minor-oxide, trace-element, and rare-earth-element analysis of pulverized rock samples; includes magnetic susceptibility measurements. (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. All samples were collected by M.B. Werdon.

LAB_SAMPLE_NUMBER

Label used by the lab to identify the sample. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Minerals)

Value	Definition
NULL	The lab sample number is identical to the sample number.

The lab sample number is typically identical to the sample number. However, in some cases, the sample number used by the lab does differ from the published sample number. We provide both numbers to document instances in which the sample numbers listed on the Certificate of Assay or other laboratory results files were non-standard or found to be incorrect.

COLLECTOR

The geologist who collected the sample. (Source: Alaska Division of Geological & Geophysical Surveys)

The samples presented in this report were collected by: Freeman, L.K., Lande, Lauren, Newberry, R.J., Reioux, D.A., Sicard, K.R., Twelker, Evan, and Wypych, Alicja

LONGITUDE

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

Range of values
Minimum:	-149.032178
Maximum:	-148.372202
Units:	decimal degrees

LATITUDE

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

Range of values
Minimum:	62.34782
Maximum:	62.745803
Units:	decimal degrees

LOCATION_METHOD

technique used to determine station location. (Source: Alaska Division of Geological & Geophysical Surveys)

Value	Definition
visual approximation	Sample location coordinates were estimated from topographic map features. The position error is approximately 100 meters.
GPS	Location data were collected using Trimble Juno T41/5 WAAS-enabled GPS devices running ArcGIS for Windows Mobile. WAAS-enabled GPS devices have a reported error of about 1 m.

BATCH_NUMBER

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

FA14124750

DESCRIPTION

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

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

DESCRIP_2

Extension of the sample or station description for descriptions which are greater than 254 characters in length (Source: Alaska Division of Geological & Geophysical Surveys)

Value	Definition
NULL	The descriptive text is shorter than 254 characters.

Characters greater than 254 of the sample or station description.

MAG_MIN

minimum magnetic susceptibility (Source: Alaska Division of Geological & Geophysical Surveys)

Value	Definition
NULL	minimum magnetic susceptibility was not measured

Range of values
Minimum:	-0.01
Maximum:	59.7
Units:	10^-3 SI

MAG_MAX

maximum magnetic susceptibility (Source: Alaska Division of Geological & Geophysical Surveys)

Value	Definition
NULL	maximum magnetic susceptibility was not measured

Range of values
Minimum:	0.13
Maximum:	124
Units:	10^-3 SI

MAG_AVG

average magnetic susceptibility (Source: Alaska Division of Geological & Geophysical Surveys)

Value	Definition
NULL	average magnetic susceptibility was not measured

Range of values
Minimum:	0.02
Maximum:	93.3
Units:	10^-3 SI

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:	0.13
Maximum:	1.96
Units:	kilograms

Au_ppm

Gold values measured in parts per million (ppm); Method: Fire Assay - Inductively Coupled Plasma - Mass Spectrometry (FA-ICP-MS); Lower detection limit = 0.001 ppm; Upper detection limit = 1 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:	0.001
Maximum:	0.105
Units:	parts per million

Pt_ppm

Platinum values measured in parts per million (ppm); Method: Fire Assay - Inductively Coupled Plasma - Mass Spectrometry (FA-ICP-MS); Lower detection limit = 0.0005 ppm; Upper detection limit = 1 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:	0.0005
Maximum:	0.0165
Units:	parts per million

Pd_ppm

Palladium values measured in parts per million (ppm); Method: Fire Assay - Inductively Coupled Plasma - Mass Spectrometry (FA-ICP-MS); Lower detection limit = 0.001 ppm; Upper detection limit = 1 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:	0.001
Maximum:	0.047
Units:	parts per million

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:	39.7
Maximum:	83.5
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:	7.44
Maximum:	21.7
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:	0.81
Maximum:	16.8
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:	0.66
Maximum:	13.65
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:	0.04
Maximum:	25.7
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:	0.09
Maximum:	5.85
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:	0.09
Maximum:	3.81
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.

Range of values
Minimum:	0.01
Maximum:	0.44
Units:	percent

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:	0.02
Maximum:	3.23
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:	0.01
Maximum:	0.35
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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.01
Maximum:	1.11
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:	0.12
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:	0.25
Units:	percent

C_pct

Carbon values measured in percent (pct); Method: Combustion Furnace (Combustion Furnace); 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:	0.01
Maximum:	2.81
Units:	percent

S_pct

Sulfur values measured in percent (pct); Method: Combustion Furnace (Combustion Furnace); 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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.01
Maximum:	0.54
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:	43
Maximum:	2200
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:	0.9
Maximum:	86.9
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:	3350
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:	0.09
Maximum:	14.95
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:	0.92
Maximum:	13.4
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:	0.56
Maximum:	8.34
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:	0.16
Maximum:	2.64
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:	3.8
Maximum:	25.6
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:	0.66
Maximum:	12.5
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:	0.2
Maximum:	14
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:	0.17
Maximum:	2.74
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:	0.9
Maximum:	44
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:	0.06
Maximum:	1.26
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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.2
Maximum:	30.7
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:	1.2
Maximum:	50.7
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:	0.23
Maximum:	11.85
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:	0.8
Maximum:	161
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:	0.46
Maximum:	12.45
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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	1
Maximum:	6
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:	42.3
Maximum:	1030
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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.1
Maximum:	1.4
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:	0.14
Maximum:	2.04
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:	0.11
Maximum:	9.69
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:	0.08
Maximum:	1.24
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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.06
Maximum:	4.39
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:	5
Maximum:	643
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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	1
Maximum:	12
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:	5.8
Maximum:	73.7
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:	0.44
Maximum:	7.93
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:	10
Maximum:	594
Units:	parts per million

As_ppm

Arsenic values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Aqua regia; Lower detection limit = 0.1 ppm; Upper detection limit = 250 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Range of values
Minimum:	0.2
Maximum:	79
Units:	parts per million

Bi_ppm

Bismuth values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Aqua regia; Lower detection limit = 0.01 ppm; Upper detection limit = 250 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:	0.23
Units:	parts per million

Hg_ppm

Mercury values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Aqua regia; Lower detection limit = 0.005 ppm; Upper detection limit = 25 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:	0.005
Maximum:	0.118
Units:	parts per million

Sb_ppm

Antimony values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Aqua regia; Lower detection limit = 0.05 ppm; Upper detection limit = 250 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:	0.05
Maximum:	1.05
Units:	parts per million

Se_ppm

Selenium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Aqua regia; Lower detection limit = 0.2 ppm; Upper detection limit = 250 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:	0.2
Maximum:	1.5
Units:	parts per million

Te_ppm

Tellurium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Aqua regia; Lower detection limit = 0.01 ppm; Upper detection limit = 250 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:	0.23
Units:	parts per million

Tl_ppm

Thallium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Aqua regia; 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:	0.51
Units:	parts per million

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:	-0.22
Maximum:	13.35
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:	97.69
Maximum:	101.93
Units:	percent

Ag_ppm

Silver values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 0.5 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.

Cd_ppm

Cadmium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; 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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.5
Maximum:	1.1
Units:	parts per million

Co_ppm

Cobalt values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; 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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	1
Maximum:	100
Units:	parts per million

Cu_ppm

Copper values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; 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:	1
Maximum:	387
Units:	parts per million

Li_ppm

Lithium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; 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:	80
Units:	parts per million

Mo_ppm

Molybdenum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; 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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	1
Maximum:	3
Units:	parts per million

Ni_ppm

Nickel values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; 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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	1
Maximum:	1150
Units:	parts per million

Pb_ppm

Lead values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; 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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	2
Maximum:	19
Units:	parts per million

Sc_ppm

Scandium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; 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:	47
Units:	parts per million

Zn_ppm

Zinc values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; 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:	11
Maximum:	182
Units:	parts per million

rdf2014-22-rock-trace-element-ree.csv, rdf2014-22-rock-trace-element-ree-limits.csv

Trace-element analysis of pulverized rock samples; includes magnetic susceptibility measurements. (Source: Alaska Division of Geological & Geophysical Surveys)

SAMPLE

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

LAB_SAMPLE_NUMBER

Label used by the lab to identify the sample. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Minerals)

Value	Definition
NULL	The lab sample number is identical to the sample number.

COLLECTOR

The geologist who collected the sample. (Source: Alaska Division of Geological & Geophysical Surveys)

The samples presented in this report were collected by: Freeman, L.K., Lande, Lauren, Newberry, R.J., Reioux, D.A., Sicard, K.R., Twelker, Evan, and Wypych, Alicja

LONGITUDE

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

Range of values
Minimum:	-148.993643
Maximum:	-148.350913
Units:	decimal degrees

LATITUDE

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

Range of values
Minimum:	62.351596
Maximum:	62.717944
Units:	decimal degrees

LOCATION_METHOD

technique used to determine station location. (Source: Alaska Division of Geological & Geophysical Surveys)

Value	Definition
visual approximation	Sample location coordinates were estimated from topographic map features. The position error is approximately 100 meters.
GPS	Location data were collected using Trimble Juno T41/5 WAAS-enabled GPS devices running ArcGIS for Windows Mobile. WAAS-enabled GPS devices have a reported error of about 1 m.

BATCH_NUMBER

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

FA14126014

DESCRIPTION

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

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

DESCRIP_2

Extension of the sample or station description for descriptions which are greater than 254 characters in length (Source: Alaska Division of Geological & Geophysical Surveys)

Value	Definition
NULL	The descriptive text is shorter than 254 characters.

Characters greater than 254 of the sample or station description.

DESCRIP_3

Extension of the sample or station description for descriptions which are greater than 508 characters in length (Source: Alaska Division of Geological & Geophysical Surveys)

Value	Definition
NULL	The descriptive text is shorter than 508 characters.

Characters greater than 508 of the sample or station description.

MAG_MIN

minimum magnetic susceptibility (Source: Alaska Division of Geological & Geophysical Surveys)

Value	Definition
NULL	minimum magnetic susceptibility was not measured

Range of values
Minimum:	0
Maximum:	331
Units:	10^-3 SI

MAG_MAX

maximum magnetic susceptibility (Source: Alaska Division of Geological & Geophysical Surveys)

Value	Definition
NULL	maximum magnetic susceptibility was not measured

Range of values
Minimum:	0.015
Maximum:	465
Units:	10^-3 SI

MAG_AVG

average magnetic susceptibility (Source: Alaska Division of Geological & Geophysical Surveys)

Value	Definition
NULL	average magnetic susceptibility was not measured

Range of values
Minimum:	0.01
Maximum:	389
Units:	10^-3 SI

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:	0.11
Maximum:	2.81
Units:	kilograms

Au_ppm

Range of values
Minimum:	0.001
Maximum:	0.875
Units:	parts per million

Pt_ppm

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.0005
Maximum:	0.0172
Units:	parts per million

Pd_ppm

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.001
Maximum:	0.03
Units:	parts per million

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:	0.02
Maximum:	48.4
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:	0.1
Maximum:	10.35
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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.2
Maximum:	2070
Units:	parts per million

Ba_ppm

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:	8300
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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.05
Maximum:	1.97
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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.01
Maximum:	76.6
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:	19.65
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:	5.48
Units:	parts per million

Ce_ppm

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:	0.21
Maximum:	75.9
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:	0.1
Maximum:	92.1
Units:	parts per million

Cr_ppm

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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	1
Maximum:	806
Units:	parts per million

Cs_ppm

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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.05
Maximum:	10.65
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)

Value	Definition
-2	Above detection limit.

Range of values
Minimum:	5.8
Maximum:	7900
Units:	parts per million

Cu_pct

Copper values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HNO3 -HClO4 -HF-HCl; Lower detection limit = 0.001 pct; Upper detection limit = 40 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: ALS Minerals)

Value	Definition
NULL	Blank (NULL) field values indicate that this chemical species was not requested or not analyzed.

Range of values
Minimum:	1.18
Maximum:	19.65
Units:	percent

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:	0.42
Maximum:	28.7
Units:	percent

Ga_ppm

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:	0.63
Maximum:	25.4
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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.05
Maximum:	0.57
Units:	parts per million

Hf_ppm

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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.1
Maximum:	9
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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.005
Maximum:	9.09
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:	0.01
Maximum:	3.83
Units:	percent

La_ppm

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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.6
Maximum:	41.4
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:	0.6
Maximum:	99.8
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:	0.01
Maximum:	10.35
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)

Value	Definition
-2	Above detection limit.

Range of values
Minimum:	28
Maximum:	76100
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:	0.11
Maximum:	1090
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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.01
Maximum:	5.01
Units:	percent

Nb_ppm

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:	0.1
Maximum:	17.6
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:	0.3
Maximum:	515
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:	10
Maximum:	5440
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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.6
Maximum:	57.9
Units:	parts per million

Rb_ppm

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:	0.3
Maximum:	169
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.

Range of values
Minimum:	0.002
Maximum:	0.326
Units:	parts per million

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.

Range of values
Minimum:	0.01
Maximum:	8.63
Units:	percent

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:	0.05
Maximum:	250
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:	0.3
Maximum:	50.1
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.

Range of values
Minimum:	1
Maximum:	74
Units:	parts per million

Sn_ppm

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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.2
Maximum:	15.1
Units:	parts per million

Sr_ppm

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:	1.5
Maximum:	855
Units:	parts per million

Ta_ppm

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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.05
Maximum:	1.25
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:	0.05
Maximum:	53.9
Units:	parts per million

Th_ppm

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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.2
Maximum:	10.4
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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.005
Maximum:	1.835
Units:	percent

Tl_ppm

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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.02
Maximum:	1.82
Units:	parts per million

U_ppm

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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.1
Maximum:	7.6
Units:	parts per million

V_ppm

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:	1
Maximum:	506
Units:	parts per million

W_ppm

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:	0.1
Maximum:	930
Units:	parts per million

Y_ppm

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:	0.3
Maximum:	70.6
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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	2
Maximum:	483
Units:	parts per million

Zr_ppm

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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.6
Maximum:	340
Units:	parts per million

Dy_ppm

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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.07
Maximum:	10.95
Units:	parts per million

Er_ppm

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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.06
Maximum:	7.71
Units:	parts per million

Eu_ppm

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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.03
Maximum:	2.66
Units:	parts per million

Gd_ppm

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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.06
Maximum:	8.96
Units:	parts per million

Ho_ppm

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:	0.01
Maximum:	2.54
Units:	parts per million

Lu_ppm

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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.01
Maximum:	1.52
Units:	parts per million

Nd_ppm

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:	0.1
Maximum:	36.7
Units:	parts per million

Pr_ppm

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:	0.03
Maximum:	9.96
Units:	parts per million

Sm_ppm

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:	0.03
Maximum:	7.47
Units:	parts per million

Tb_ppm

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:	0.01
Maximum:	1.48
Units:	parts per million

Tm_ppm

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)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.01
Maximum:	1.12
Units:	parts per million

Yb_ppm

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:	0.03
Maximum:	8.52
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)
- Wypych, Alicja
- Twelker, Evan
- Freeman, L.K.
- Lande, Lauren
- Newberry, R.J.
- Reioux, D.A.
- Sicard, K.R.
Who also contributed to the data set?

This program of geologic mapping and rock sampling was conducted as part of the U.S. Geological Survey National Cooperative Geologic Mapping Program (STATEMAP; grant G14AC00167) and the state of Alaska's Strategic Minerals Assessment project, an initiative designed to evaluate Alaska's potential for rare-earth elements, PGEs, and other similarly supply-challenged resources.
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?

The mineral-resources group from the Alaska Division of Geological & Geophysical Surveys (DGGS) carried out a geologic mapping project in the Talkeetna Mountains C-4, C-3, and B-4 quadrangles from July 23 through August 3, 2014. This project is a part of a multi-year project focusing on improving the publicly-available geological and geochemical data and assessing the mineral potential of the less-explored extension of the western Wrangellia terrane. This program of geologic mapping and rock sampling was conducted as part of the U.S. Geological Survey National Cooperative Geologic Mapping Program and the state of Alaska's Strategic Minerals Assessment project, an initiative designed to evaluate Alaska's potential for rare-earth elements, PGEs, and other similarly supply-challenged resources.

How was the data set created?

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

Date: 2014 (process 1 of 5)
Sample collection - Rock samples were collected for two different purposes. First, samples of visibly mineralized or altered rock were preferentially collected and analyzed for trace-element geochemistry. Second, igneous and meta-igneous rocks showing little alteration or weathering were collected for whole-rock major-oxide, minor-oxide, and trace-element analyses to aid in classification and study of petrogenesis and tectonic setting. Most samples are 'grab' samples, which were randomly collected at a location. However, a few samples are 'select' samples, which were deliberately collected from a specific feature, as noted in the sample field description.

Date: 2014 (process 2 of 5)
Magnetic susceptibility measurements - Magnetic susceptibility measurements were collected using Terraplus Handheld Magnetic Susceptibility KT 5, 6, 9, and 10 Meters. The measurements were performed 3 to 10 times on random surfaces of a rock to obtain maximum, minimum, and representative average value for the rock.

Date: 2014 (process 3 of 5)
Sample preparation - Rock samples were processed by ALS Minerals using their PREP-31 package. The samples were crushed to better than 70 percent passing 2 mm, and a 250 g split was pulverized to better than 85 percent passing 75 microns. Prior to crushing, samples for whole-rock analysis were trimmed by DGGS staff to remove weathering, and cut surfaces were sanded to remove any saw metal.

Date: 2014 (process 4 of 5)
Major- and trace-element, including rare-earth element, compositions - Major- and trace-element including rare-earth element compositions for rock samples were determined by ALS Minerals method ME-ICP61r: Four-acid digestion followed by inductively coupled plasma- atomic emission spectrometry. (ICP-AES) and inductively coupled plasma-mass spectroscopy (ICP-MS). Platinum, palladium, and gold values were analyzed by 30 g fire assay with ICP-MS finish (ALS Minerals method PGM-MS23). Samples that exceeded detection limits for elements of interest were reanalyzed using specific elemental tests. Over-limit values for Cu were reanalyzed using four-acid digestion and ICP-AES (ALS Minerals procedure ME-OG62.

Date: 2014 (process 5 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).
What similar or related data should the user be aware of?
Benowitz, J.A., Layer, P.W., and Twelker, Evan, 2014, 40Ar/39Ar data from rocks collected in 2013 in the Wrangellia mineral assessment area, Gulkana, Healy, Mount Hayes, and Talkeetna Mountains quadrangles, Alaska: Raw Data File RDF 2014-18, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.
Online Links:
- <http://dx.doi.org/10.14509/29119>
Other_Citation_Details: 10 p
Burns, L.E., CGG, and Fugro GeoServices, Inc., 2014, Wrangellia survey area: Airborne magnetic and electromagnetic data in line (point), grid, vector, and map formats, Talkeetna Mountains, Healy, and Mt. Hayes quadrangles, south-central Alaska: Geophysical Report GPR 2014-1, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.
Online Links:
- <http://dx.doi.org/10.14509/27022>
Other_Citation_Details: 56 sheets, 1 DVD, scale 1:63,360
Staff, DGGS, Dighem, and WGM, Inc., 1998, Total field magnetics of the Iron Creek area, Talkeetna Mountains Quadrangle, southcentral Alaska: Report of Investigation RI 98-1, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.
Online Links:
- <http://dx.doi.org/10.14509/2577>
Other_Citation_Details: 2 sheets, scale 1:63,360
Staff, DGGS, Dighem, and WGM, Inc., 1998, 900 Hz coplanar resistivity of the Iron Creek area, Talkeetna Mountains Quadrangle, southcentral Alaska: Report of Investigation RI 98-2, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.
Online Links:
- <http://dx.doi.org/10.14509/2578>
Other_Citation_Details: 2 sheets, scale 1:63,360
Staff, DGGS, Dighem, and WGM, Inc., 1998, 7200 Hz coplanar resistivity of the Iron Creek area, Talkeetna Mountains Quadrangle, southcentral Alaska: Report of Investigation RI 98-3, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.
Online Links:
- <http://dx.doi.org/10.14509/2579>
Other_Citation_Details: 2 sheets, scale 1:63,360
Twelker, Evan, Bachmann, E.N., Freeman, L.K., Newberry, R.J., Reioux, D.A., Sicard, K.R., Tuzzolino, A.L., Wright, T.C., and Wypych, Alicja, 2014, Major-oxide, minor-oxide, and trace-element geochemical data from rocks and stream sediments in the Wrangellia mineral assessment area, Gulkana, Healy, Mount Hayes, and Talkeetna Mountains quadrangles, Alaska: Raw Data File RDF 2014-3, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.
Online Links:
- <http://dx.doi.org/10.14509/27181>
Other_Citation_Details: 6 p

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

How well have the observations been checked?
Coordinates of sample locations were determined by the geologists in the field using handheld GPS units. Sample numbers were recorded in the field on sample bags and on field note sheets. The sample location table was plotted in GIS software to visually verify location accuracy and cross checked for consistency against the sample numbers recorded on the bags. Lab results were examined by the DGGS geologists to ensure that they are reasonable given the geologic context of the sample. Inconsistencies between the field data and the lab sample numbers listed on the COA (certificate of assay) are noted in the data tables. We also note the method used to generate sample coordinates.
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. Latitude and longitude are reported in the WGS84 datum. Location of samples 14AW001 and 14AW002 were estimated from topographic map features, and position error is approximately 100 meters.
How accurate are the heights or depths?
Where are the gaps in the data? What is missing?
The data tables have been lightly edited for clarity but are generally provided as received from the lab.
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 2014-22
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/10.14509/29140>
- Cost to order the data: Free download

Who wrote the metadata?

Dates:

Last modified: 24-Oct-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 Fri Oct 24 11:52:46 2014

Data format:	ASCII tabular files
Network links:	<http://dx.doi.org/10.14509/29140>