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

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What does this data set describe?

Title:: 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
Abstract:: Re-analyses of sample pulps and bulk rejects from historic USBM rock and heavy-mineral-concentrate samples were conducted by the Alaska Division of Geological & Geophysical Surveys (DGGS) as part of the State of Alaska's Strategic and Critical Minerals Assessment project, which is designed to evaluate Alaska's potential for these resources. The objective of this resource assessment is to expand the state's geochemical database by obtaining and publishing modern, quantitative geochemical analyses for historic USBM samples, where available. Highlights of this re-analysis project include heavy mineral concentrates with up 7,220 ppm Sn, 5,870 ppm Cr, and 17,000 ppm Mn.
Supplemental_Information:: This data distribution package consists of multiple CSV files which provide sample locations and descriptions, geochemical data, analytical methods, and instrumentation detection limits for analysis of the samples collected for this project. A primary table presents the analytical results, sample locations, and other information about each sample. A secondary table provides detailed information about the methods and detection limits of the instrumentation used to analyze the data. 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. Attribute information for each layer is included in this metadata file under the "Entity_and_Attribute_Information" section. The metadata layer provides the metadata, codesets, or other documentation files applicable to all layers. The data layer(s) are titled: >rock-pan-con-trace-element-ree: Trace-element and rare-earth-element analysis of sample pulps and bulk rejects from historic USBM rock and heavy-mineral-concentrate samples

How should this data set be cited?
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.
What geographic area does the data set cover?

West_Bounding_Coordinate: -151.3191

East_Bounding_Coordinate: -150.0384

North_Bounding_Coordinate: 66.2836

South_Bounding_Coordinate: 65.9581
What does it look like?
Does the data set describe conditions during a particular time period?

Calendar_Date: 2012
Currentness_Reference: ground condition
What is the general form of this data set?

Geospatial_Data_Presentation_Form: ASCII tabular files, report
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?
  The horizontal datum used is North American Datum of 1927.
  The ellipsoid used is North American Datum of 1927.
  The semi-major axis of the ellipsoid used is 6378206.4.
  The flattening of the ellipsoid used is 1/294.9786982.

How does the data set describe geographic features?

rdf2013-7-rock-pan-con-trace-element-ree.csv , rdf2013-7-rock-pan-con-trace-element-ree-limits.csv

Trace-element and rare-earth-element analysis of sample pulps and bulk rejects from historic USBM rock and heavy-mineral-concentrate samples. (Source: Alaska Division of Geological & Geophysical Surveys)

Sample_ID

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

Samples numbers with a KA prefix were collected from upland drainages along the Trans-Alaska Pipeline System (TAPS). Samples with an RM prefix were collected from either the Ray River or on upper No Name Creek.

USBM_Reference

Reference to the originating USBM dataset.. (Source: Alaska Division of Geological & Geophysical Surveys)

Value	Definition
Stablein, 1980	Stablein, N.K., 1980, Report on the mineral resource investigations of six areas of central and northeastern Alaska, Contract No. GJ8X-33(80): U.S. Bureau of Mines Contract Report, 188 p., 10 sheets, scale 1:250,000.
Barker, 1983	Barker, J.C., 1983, Reconnaissance of tin and tungsten in heavy mineral panned concentrates along the Trans-Alaska Pipeline Corridor, north of Livengood, interior Alaska: U.S. Bureau of Mines Open File Report 59-83, 24 p., 2 sheets, scale 1:250,000.
Barker, 1991	Barker, J.C., 1991, Investigation of tin-rare earth element placers in the Ray River watershed: U.S. Bureau of Mines Open-File Report 34-91, 63 p., 1 sheet, scale 1:63,360.

USBM_Materials

Sample media of the original USBM sample. (Source: United States Bureau of Mines staff)

Value	Definition
rock	The sample pulp was a bulk reject split from a previously analyzed USBM rock sample. USBM rock samples were collected from float or rock chips at mineralized localities and were subsequently crushed, pulverized and split prior to analysis.
pan concentrate	The sample was a bulk reject split from a previously analyzed USBM pan concentrate sample. The USBM samples were concentrated by screening through a 0.5-inch and a 16-mesh screen, respectively, followed by either hand panning or tabling the undersize portion.

Latitude

Latitude, NAD27 (Source: Alaska Division of Geological & Geophysical Surveys)

Range of values
Minimum:	65.9581
Maximum:	66.2836
Units:	decimal degrees

Longitude

Longitude, NAD27 (Source: Alaska Division of Geological & Geophysical Surveys)

Range of values
Minimum:	-151.3191
Maximum:	-150.0384
Units:	decimal degrees

Weight_kg

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

Range of values
Minimum:	0.04
Maximum:	0.09
Units:	kilograms

Ba_ppm_1

Barium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	3.9
Maximum:	540
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 - HNO3-HCl dissolution; 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	1.3
Maximum:	5960
Units:	parts per million

Cr_ppm_1

Chromium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 10 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	80
Maximum:	5870
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 - HNO3-HCl dissolution; 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	0.07
Maximum:	61.4
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 - HNO3-HCl dissolution; 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	0.23
Maximum:	294
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 - HNO3-HCl dissolution; 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	0.13
Maximum:	194.5
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 - HNO3-HCl dissolution; 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	0.09
Maximum:	9.05
Units:	parts per million

Ga_ppm_1

Gallium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	2
Maximum:	87.6
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 - HNO3-HCl dissolution; 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	0.34
Maximum:	290
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 - HNO3-HCl dissolution; 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.2
Maximum:	282
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 - HNO3-HCl dissolution; 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	0.05
Maximum:	62.8
Units:	parts per million

La_ppm_1

Lanthanum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	0.7
Maximum:	2910
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 - HNO3-HCl dissolution; 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	0.01
Maximum:	27.8
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 - HNO3-HCl dissolution; 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	0.6
Maximum:	627
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 - HNO3-HCl dissolution; 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	0.9
Maximum:	2080
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 - HNO3-HCl dissolution; 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	0.2
Maximum:	658
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 - HNO3-HCl dissolution; 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	0.8
Maximum:	938
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 - HNO3-HCl dissolution; 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	0.32
Maximum:	404
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 - HNO3-HCl dissolution; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Value	Definition
-2	Above detection limit.

Range of values
Minimum:	1
Maximum:	7220
Units:	parts per million

Sr_ppm_1

Strontium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	5
Maximum:	472
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 - HNO3-HCl dissolution; 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.1
Maximum:	123
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 - HNO3-HCl dissolution; 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	0.05
Maximum:	44.6
Units:	parts per million

Th_ppm_1

Thorium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Value	Definition
-2	Above detection limit.

Range of values
Minimum:	0.14
Maximum:	843
Units:	parts per million

Tl_ppm_1

Thallium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.5
Maximum:	4
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 - HNO3-HCl dissolution; 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	0.02
Maximum:	29.4
Units:	parts per million

U_ppm_1

Uranium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	0.15
Maximum:	169
Units:	parts per million

V_ppm_1

Vanadium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	5
Maximum:	284
Units:	parts per million

W_ppm_1

Tungsten values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Mass Spectroscopy (ICP-MS), Lithium metaborate fusion - HNO3-HCl dissolution; Lower detection limit = 1 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	1
Maximum:	878
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 - HNO3-HCl dissolution; 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	1.6
Maximum:	1990
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 - HNO3-HCl dissolution; 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	0.09
Maximum:	178.5
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 - HNO3-HCl dissolution; Lower detection limit = 2 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Value	Definition
-1	Below detection limit.
-2	Above detection limit.

Range of values
Minimum:	20
Maximum:	7760
Units:	parts per million

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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.7
Maximum:	1.7
Units:	parts per million

Al_pct

Aluminum values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	0.57
Maximum:	9.65
Units:	percent

As_ppm

Arsenic values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	5
Maximum:	89
Units:	parts per million

Ba_ppm_2

Barium 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	10
Maximum:	560
Units:	parts per million

Be_ppm

Beryllium 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.5
Maximum:	66.2
Units:	parts per million

Bi_ppm

Bismuth 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	2
Maximum:	103
Units:	parts per million

Ca_pct

Calcium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	0.01
Maximum:	12.7
Units:	percent

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 = 500 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.5
Maximum:	5
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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	1
Maximum:	134
Units:	parts per million

Cr_ppm_2

Chromium 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	59
Maximum:	4920
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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	1
Maximum:	70
Units:	parts per million

Fe_pct

Iron values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	0.92
Maximum:	13.4
Units:	percent

Ga_ppm_2

Gallium 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	10
Maximum:	50
Units:	parts per million

K_pct

Potassium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	0.01
Maximum:	3.75
Units:	percent

La_ppm_2

Lanthanum 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	10
Maximum:	2220
Units:	parts per million

Mg_pct

Magnesium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	0.06
Maximum:	23
Units:	percent

Mn_ppm

Manganese values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 5 ppm; Upper detection limit = 100000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	173
Maximum:	17000
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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	1
Maximum:	6
Units:	parts per million

Na_pct

Sodium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.07
Maximum:	2.16
Units:	percent

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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	1
Maximum:	1360
Units:	parts per million

P_ppm

Phosphorus 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	30
Maximum:	4570
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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	3
Maximum:	74
Units:	parts per million

S_pct

Sulfur values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	0.01
Maximum:	0.07
Units:	percent

Sb_ppm

Antimony values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 5 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	5
Maximum:	10
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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	2
Maximum:	71
Units:	parts per million

Sr_ppm_2

Strontium 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	6
Maximum:	557
Units:	parts per million

Th_ppm_2

Thorium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; Lower detection limit = 20 ppm; Upper detection limit = 10000 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	20
Maximum:	1280
Units:	parts per million

Ti_pct

Titanium values measured in percent (pct); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), HF-HNO3-HClO4-HCl; 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	0.02
Maximum:	6.36
Units:	percent

Tl_ppm_2

Thallium 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Value	Definition
-1	Below detection limit.

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

U_ppm_2

Uranium 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Value	Definition
-1	Below detection limit.

V_ppm_2

Vanadium 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	4
Maximum:	239
Units:	parts per million

W_ppm_2

Tungsten 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Value	Definition
-1	Below detection limit.

Range of values
Minimum:	10
Maximum:	640
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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Range of values
Minimum:	19
Maximum:	786
Units:	parts per million

Au_ppm

Gold values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Fire assay - aqua regia; Lower detection limit = 0.001 ppm; Upper detection limit = 10 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Value	Definition
-1	Below detection limit.
NULL	Blank (NULL) field values indicate that this chemical species was not requested or not analyzed.

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

Pt_ppm

Platinum values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Fire assay - aqua regia; Lower detection limit = 0.001 ppm; Upper detection limit = 10 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Value	Definition
-1	Below detection limit.
NULL	Blank (NULL) field values indicate that this chemical species was not requested or not analyzed.

Range of values
Minimum:	0.006
Maximum:	0.008
Units:	parts per million

Pd_ppm

Palladium values measured in parts per million (ppm); Method: Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-AES), Fire assay - aqua regia; Lower detection limit = 0.001 ppm; Upper detection limit = 10 ppm; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

Value	Definition
-1	Below detection limit.
NULL	Blank (NULL) field values indicate that this chemical species was not requested or not analyzed.

Range of values
Minimum:	0.005
Maximum:	0.035
Units:	parts per million

Sn_pct

Tin values measured in percent (pct); Method: X-Ray Fluorescence (XRF), Lithium Borate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 60 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

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

Range of values
Minimum:	1.64
Maximum:	3.37
Units:	percent

Th_pct

Thorium values measured in percent (pct); Method: X-Ray Fluorescence (XRF), Lithium Borate Fusion; Lower detection limit = 0.01 pct; Upper detection limit = 15 pct; Detection limits indicate the minimum and maximum concentrations that can be accurately determined. (Source: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

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

Range of values
Minimum:	0.13
Maximum:	0.18
Units:	percent

Zr_pct

Zirconium values measured in percent (pct); Method: X-Ray Fluorescence (XRF), Lithium Borate Fusion; 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: Alaska Division of Geological & Geophysical Surveys and ALS Minerals.)

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

Range of values
Minimum:	0.8
Maximum:	1.23
Units:	percent

Who produced the data set?

Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
- Blessington, M.J.
- Reioux, D.A.
- Werdon, M.B.
Who also contributed to the data set?

Analyses were paid for 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?

The objectives of DGGS's resource assessment are to improve the trace-element geochemical coverage of selected watersheds; to obtain modern, quantitative geochemical analyses; to understand the petrogenesis of the granites; and to better document established mineral occurrences. This work was conducted as part of the State's Rare Earth Elements and Strategic Minerals Assessment project, which is designed to evaluate Alaska's potential for these resources.

How was the data set created?

From what previous works were the data drawn?
Barker, J.C., 1983 (source 1 of 6)
Barker, J.C., 1983, Reconnaissance of tin and tungsten in heavy mineral panned concentrates along the Trans-Alaska Pipeline corridor, north of Livengood, interior Alaska: Open-File Report OFR 59-83, U.S. Bureau of Mines, United States.
Online Links:
- <http://www.dggs.alaska.gov/pubs/id/21432>
Other_Citation_Details: 24 p., 2 sheets, scale 1:250,000

Type_of_Source_Media: paper

Source_Scale_Denominator: 250000

Source_Contribution: Preliminary research and sample retrieval
Barker, J.C., 1991 (source 2 of 6)
Barker, J.C., 1991, Investigation of tin-rare earth element placers in the Ray River watershed: Open-File Report OFR 34-91, U.S. Bureau of Mines, United States.
Online Links:
- <http://www.dggs.alaska.gov/pubs/id/21385>
Other_Citation_Details: 63 p., 1 sheet, scale 1:63,360

Type_of_Source_Media: paper

Source_Scale_Denominator: 63360

Source_Contribution: Preliminary research and sample retrieval
Barker, J.C. and Foley, J.Y., 1986 (source 3 of 6)
Barker, J.C., and Foley, J.Y., 1986, Tin reconnaissance of the Kanuti and Hodzana Rivers uplands, central Alaska: Information Circular IC 9104, U.S. Bureau of Mines, United States.
Online Links:
- <http://www.dggs.alaska.gov/pubs/id/21287>
Other_Citation_Details: 27 p

Type_of_Source_Media: paper

Source_Contribution: Preliminary research and sample retrieval
Foley, J.Y. and McDermott, M.M., 1983 (source 4 of 6)
Foley, J.Y., and McDermott, M.M., 1983, Podiform chromite occurrences in the Caribou Mountain and lower Kanuti River areas, central Alaska, part I: reconnaissance investigations: Information Circular IC 8915, U.S. Bureau of Mines, United States.
Online Links:
- <http://www.dggs.alaska.gov/pubs/id/21279>
Other_Citation_Details: 8 p., 1 sheet

Type_of_Source_Media: paper

Source_Contribution: Preliminary research and sample retrieval
Smith, S.M., 2006 (source 5 of 6)
Smith, S.M., 2006, National geochemical database - Reformatted data from the National Uranium Resource Evaluation (NURE) Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) Program: Open-File Report OF 97-492 v. 1.40, U.S. Geological Survey, United States.
Online Links:
- <http://www.dggs.alaska.gov/pubs/id/25462>
Type_of_Source_Media: digital data

Source_Contribution: Preliminary research and sample retrieval
Stablein, N.K., 1980 (source 6 of 6)
Stablein, N.K., 1980, Report on the mineral resource investigations of six areas of central and northeastern Alaska, Contract No. GJ8X-33(80): Contract Report Stablein, N.K., 1980, U.S. Bureau of Mines, United States.
Online Links:
- <http://www.dggs.alaska.gov/pubs/id/22663>
Other_Citation_Details: 188 p., 10 sheets, scale 1:250,000

Type_of_Source_Media: paper

Source_Scale_Denominator: 250000

Source_Contribution: Preliminary research and sample retrieval
How were the data generated, processed, and modified?
Date: 2011 (process 1 of 3)
Preliminary research and sample retrieval - DGGS staff selected sample pulps and bulk rejects of historic USBM rock and heavy-mineral-concentrate samples that were archived at the Alaska Geologic Materials Center. These samples had been previously analyzed by USBM for resource evaluation projects in the Ray Mountains and Kanuti-Hodzana uplands study area. Location data for each sample were derived by scanning the station-location map figures from historic USBM reports, georegistering the map figures in ArcGIS v. 10.0, creating a point layer of station locations, and extracting latitude-longitude coordinates. The accompanying manuscript provides a brief summary of USBM sampling methods; however, users should review the originating reports for verification and additional details.
Data sources used in this process:
- Barker, J.C., 1983
- Barker, J.C., 1991
- Barker, J.C. and Foley, J.Y., 1986
- Foley, J.Y. and McDermott, M.M., 1983
- Smith, S.M., 2006
- Stablein, N.K., 1980
Date: 2012 (process 2 of 3)
Trace-element and rare-earth-element analysis of sample pulps and bulk rejects from historic USBM rock and heavy-mineral-concentrate samples - All samples were analyzed for ore-related trace elements and the full suite of rare-earth elements. Selected samples were also analyzed for platinum, palladium, and gold. Trace-element compositions were determined using inductively coupled plasma atomic emission spectroscopy (ICP-AES) following a four-acid digestion process. Rare-earth and additional trace-element compositions were determined using inductively coupled plasma mass spectroscopy (ICP-MS). ICP-MS samples were dissolved in acid following lithium metaborate fusion. Platinum, palladium, and gold values were obtained from a 30 g sample using inductively coupled plasma atomic emission spectroscopy (ICP-AES) following aqua-regia digestion-fire assay. Some samples were retested for quality control purposes; the results were not included in the publication because the percent variance of the samples had a mean of 1.25 percent, and presented no significant change. Several samples with elements (Sn, Th, Zr) above the detection limits in the analytical methods described above were re-analyzed using X-ray fluorescence following lithium borate fusion.

Date: 2014 (process 3 of 3)
We edited and corrected the location coordinates for sample KA9955. The correct coordinates are latitude:66.42505, longitude:-150.61791. Users should note that all coordinates were digitized from scanned maps.
What similar or related data should the user be aware of?
Adleman, J.N., and Bluemink, Elizabeth, 2013, Second annual Alaska strategic and critical minerals summit: Miscellaneous Publication MP 151, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.
Online Links:
- <http://dx.doi.org/10.14509/25095>
Other_Citation_Details: 17 p
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 streams 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
Stevens, D.S.P., Werdon, M.B., and Wright, T.C., 2013, Geochemical trace-element and rare-earth element data from rock samples collected in 2012 on Annette Island, southeast Alaska: Raw Data File RDF 2013-2, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.
Online Links:
- <http://dx.doi.org/10.14509/24975>
Other_Citation_Details: 2 p
Szumigala, D.J., and Werdon, M.B., 2011, Rare-Earth Elements: A brief overview including uses, worldwide resources, and known occurrences in Alaska: Information Circular IC 61, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.
Online Links:
- <http://dx.doi.org/10.14509/22262>
Other_Citation_Details: 12 p
Werdon, M.B., Gallagher, P.E., and Blessington, M.J., 2012, Geochemical, major-oxide, minor-oxide, trace-element, and rare-earth-element data from rock, stream sediment, and pan-concentrate samples collected in 2011 in the William Henry Bay area, Juneau C-4 and D-4 quadrangles, Southeast Alaska: Raw Data File RDF 2012-2, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.
Online Links:
- <http://dx.doi.org/10.14509/23843>
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. Some samples were retested for quality control purposes and the results were not included in the publication because the variance of the samples had a mean of 1.25 percent and presented no significant change.
How accurate are the geographic locations?
Location data for each sample were derived by scanning the station-location map figures from historic USBM reports, georegistering the map figures in ArcGIS v. 10.0, creating a point layer of station locations, and extracting latitude-longitude coordinates. Former USBM staff provided us with a location coordinate accuracy estimate of 50 meters with likely better accuracy in stream-beds and areas of high relief.
How accurate are the heights or depths?
Where are the gaps in the data? What is missing?
All samples were analysed for rare-earth and additional trace-element compositions. Selected samples were also analysed for platinum, palladium, and gold. Samples with elements (Sn, Th, Zr) above the detection limits in the analytical methods described above were re-analyzed using X-ray fluorescence following lithium borate fusion.
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 2013-7
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/10.14509/25581>
- Cost to order the data: Free download

Who wrote the metadata?

Dates:

Last modified: 28-Apr-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 Mon Apr 28 13:45:37 2014

Data format:	ASCII tabular files
Network links:	<http://dx.doi.org/10.14509/25581>