Qualitative Mineral Potential Map of Tungsten Skarn in the Yukon-Tanana Uplands, Eastern Alaska, USA, 2021

This data release supports the paper titled, “Tungsten skarn potential of the Yukon-Tanana Uplands, Eastern Alaska, USA-A mineral resource assessment”, published via open-access license in the Journal of Geochemical Exploration and available at: https://doi.org/10.1016/j.gexplo.2020.106700. The data release includes GIS data that map potential for tungsten skarn mineralization in permissive tracts in the Yukon-Tanana Uplands, Eastern Alaska, along with tables listing keywords and procedures used to produce the permissive tracts and score them for mineral potential. Supplementary Data part A lists keywords used to extract permissive rock types from the Geologic Map of Alaska (Wilson et al., 2015) to generate the permissive tract for tungsten skarn. Supplementary Data part B describes the tract polishing procedures. Supplementary Data part C lists the parameters for scoring tungsten skarn mineralization potential within the permissive tract features. The GIS data are encapsulated in a file geodatabase called AK_Wskarn_tract.gdb and are also available in the shapefile and KML formats. The geodatabase contains three datasets. The polygon feature class “primary_attributes” contains the scored tungsten skarn permissive tract subdivided by National Hydrography Dataset HUC12 drainages. A related table, “qualitative_assessment” contains detailed scoring information for each feature. The point feature class “mineral_sites_ranked” contains W-bearing mineral sites pulled from the Alaska Resource Data File with additional fields added for this study. The GIS data folder also includes the Python script used to score potential. The datasets and methods are described in detail in the accompanying paper.

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

Field values were manually validated using the scoring table to confirm proper output of the Python script.

Logical_Consistency_Report:

Null and empty field, or fields with -9999, generally indicate an absence of data in the source dataset used to populate the field. Explanation of null, blank, or -9999 fields are given in the attribute definition section.

Completeness_Report:

Dataset is considered complete for the information presented, as described in Abstract. No data are omitted.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

The horizontal accuracy of polygon features reflects their derivation from 1:250,000 scale reconnaissance geologic mapping. The horizontal accuracy of point features in mineral_sites_ranked varies and is described for each feature in the attribute table.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: USGS National Geospatial Program (NGP)
Publication_Date: 2013
Title: National Hydrography Dataset - Watershed Boundary Dataset
Geospatial_Data_Presentation_Form: vector digital data
Publication_Information:

Publication_Place: Online
Publisher: U.S. Geological Survey

Other_Citation_Details:

USGS National Geospatial Program, 2013, National Hydrography Dataset – Watershed Boundary Dataset, Accessed August, 2019, from https://prd-tnm.s3.amazonaws.com/StagedProducts/Hydrography/WBD/National/GDB/WBD_National_GDB.zip

Online_Linkage:

https://prd-tnm.s3.amazonaws.com/StagedProducts/Hydrography/WBD/National/GDB/WBD_National_GDB.zip

Type_of_Source_Media: online
Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 201908

Source_Currentness_Reference: access date

Source_Citation_Abbreviation: NHD - WBDHU12
Source_Contribution:

Used to subdivide tract polygons by 12-digit hydrologic unit boundaries

Source_Information:

Source_Citation:

Citation_Information:

Originator: Wilson, F.H.
Originator: Hults, C.P.
Originator: Mull, C.G.
Originator: Karl, S.M.
Publication_Date: 2015
Title: Geologic map of Alaska
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:

Series_Name: U.S. Geological Survey Scientific Investigations Map
Issue_Identification: SIM3340

Other_Citation_Details:

Wilson, F.H., Hults, C.P., Mull, C.G, and Karl, S.M, comps., 2015, Geologic map of Alaska, accessed August 2019: U.S. Geological Survey Scientific Investigations Map 3340, pamphlet 196 p., 2 sheets, scale 1:1,584,000, http://dx.doi.org/10.3133/sim3340

Online_Linkage: http://pubs.usgs.gov/sim/3340/sim3340_gdb.zip

Source_Scale_Denominator: 250000
Type_of_Source_Media: online
Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2015

Source_Currentness_Reference: Access date

Source_Citation_Abbreviation: Wilson et al., 2015
Source_Contribution:

Polygon features of the digital geologic map were used to derive the permissive tract.

Source_Information:

Source_Citation:

Citation_Information:

Originator: U.S. Geological Survey
Publication_Date: 2008
Title: Alaska Resource Data File
Geospatial_Data_Presentation_Form: tabular digital data
Series_Information:

Series_Name: U.S. Geological Survey Open-File Report
Issue_Identification: 2008-1225

Other_Citation_Details:

U.S. Geological Survey, 2008, Alaska Resource Data File, accessed August, 2019 https://www.usgs.gov/centers/asc/science/alaska-resource-data-file?qt-science_center_objects=0#qt-science_center_objects

Online_Linkage:

https://www.usgs.gov/centers/asc/science/alaska-resource-data-file?qt-science_center_objects=0#qt-science_center_objects

Type_of_Source_Media: online
Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2019

Source_Currentness_Reference: Access date

Source_Citation_Abbreviation: ARDF
Source_Contribution:

Mineral sites in the point feature class mineral_sites_ranked were derived from ARDF

Source_Information:

Source_Citation:

Citation_Information:

Originator: Granitto, M.
Originator: Wang, B.
Originator: Shew, N.B.
Originator: Karl, S.M.
Originator: Labay, K.A.
Originator: Werdon, M.B.
Originator: Seitz, S.S.
Originator: Hoppe, J.E.
Publication_Date: 2019
Title:

Alaska Geochemical Database Version 3.0 (AGDB3) - Including "best value" data compilations for rock, sediment, soil, mineral, and concentrate sample media

Geospatial_Data_Presentation_Form: tabular digital data
Series_Information:

Series_Name: U.S. Geological Survey Data Series
Issue_Identification: 1117

Other_Citation_Details:

Granitto, M., Wang, B., Shew, N.B., Karl, S.M., Labay, K.A., Werdon, M.B., Seitz, S.S., and Hoppe J.E., 2019, Alaska Geochemical Database Version 3.0 (AGDB3) including best value data compilations for rock, sediment, soil, mineral, and concentrate sample media, accessed August 2019: U.S. Geological Survey data release, https://doi.org/10.5066/P98NHRAD.

Online_Linkage: https://doi.org/10.5066/P98NHRAD

Type_of_Source_Media: online
Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2019

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: AGDB3
Source_Contribution:

The database was used to score tungsten skarn potential in each polygon

Source_Information:

Source_Citation:

Citation_Information:

Originator: Jones, J.V. III
Originator: Karl, S.M.
Originator: Labay, K.A.
Originator: Shew, N.B.
Originator: Granitto, M.
Originator: Hayes, T.S.
Originator: Mauk, J.L.
Originator: Schmidt, J.M.
Originator: Wang, B.
Originator: Werdon, M.B.
Originator: Yager, D.B.
Publication_Date: 2015
Title:

GIS-based identification of areas with mineral resource potential for six selected deposit groups, Bureau of Land Management Central Yukon planning area, Alaska

Series_Information:

Series_Name: U.S. Geological Survey Open-File Report
Issue_Identification: 2015-1021

Online_Linkage: https://doi.org/10.3133/ofr20151021

Type_of_Source_Media: online
Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2015

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: Jones et al. 2015
Source_Contribution:

The qualitative assessment methodology used in this study is based in part on the methods described in Jones et al. (2015)

Source_Information:

Source_Citation:

Citation_Information:

Originator: Singer, D.A.
Originator: Menzie, W.D.
Publication_Date: 2010
Title:

Quantitative mineral resource assessments: an integrated approach

Publication_Information:

Publication_Place: Oxford, England
Publisher: Oxford University Press

Type_of_Source_Media: book
Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2010

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: Singer and Menzie (2010)
Source_Contribution:

The approach and methodology of the quantitative assessment are based in part on this work.

Source_Information:

Source_Citation:

Citation_Information:

Originator: Cox, D.P.
Originator: Singer, D.A.
Publication_Date: 1992
Title: Mineral deposit models
Series_Information:

Series_Name: U.S. Geological Survey Bulletin
Issue_Identification: 1693

Online_Linkage: https://pubs.usgs.gov/bul/b1693/

Type_of_Source_Media: online
Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 1992

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: Cox and Singer (1992)
Source_Contribution:

This publication provides the basis for classification of deposit types in ARDF

Source_Information:

Source_Citation:

Citation_Information:

Originator: Zientek, M.L.
Originator: Wintzer, N.E.
Originator: Hayes, T.S.
Originator: Parks, H.L.
Originator: Briggs, D.A.
Originator: Causey, J.D.
Originator: Hatch, S.A.
Originator: Jenkins, M.C.
Originator: Williams, D.J.
Publication_Date: 2015
Title:

Qualitative assessment of selected areas of the world for undiscovered sediment-hosted stratabound copper deposits

Series_Information:

Series_Name: U.S. Geological Survey Scientific Investigations Report
Issue_Identification: 2010-5090-Y

Other_Citation_Details:

Zientek, M.L., Wintzer, N.E., Hayes, T.S., Parks, H.L., Briggs, D.A., Causey, J.D., Hatch, S.A., Jenkins, M.C., and Williams, D.J., 2015, Qualitative assessment of selected areas of the world for undiscovered sediment-hosted stratabound copper deposits, accessed August 2019: U.S. Geological Survey Scientific Investigations Report 2010–5090–Y, 143 p., and spatial data, http://dx.doi.org/10.3133/sir20105090Y

Online_Linkage: http://dx.doi.org/10.3133/sir20105090Y

Type_of_Source_Media: online
Source_Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 2015

Source_Currentness_Reference: publication date

Source_Citation_Abbreviation: Zientek et al. 2015
Source_Contribution:

This source documents the prototract tool used in the tract smoothing Process Step. The prototract tool is a series of built-in ArcMap Toolbox functions, which are described in the Permissive Tract Delineation section in Zientek et al. (2015).

Process_Step:

Process_Description:

Generation of the proto-permissive tract -The digital geologic map of Alaska (Wilson et al., 2015) was queried in GIS software to extract carbonate and granitic rock types -A 2km buffer was made around the extracted features -The buffered features were intersected and dissolved to generate a proto-permissive tract

Process_Date: 201908

Process_Step:

Process_Description:

Prototract smoothing -The prototract was smoothed in the ArcGIS software suite using the USGS prototract tool (Zientek et al. 2015) using the following parameters: Aggregation Distance, 3 km; Offset, 4 km; Simplification Algorithm, “BEND_SIMPLIFY”; Smoothing Tolerance, 4 km; Smoothing Algorithm, PAEK; February 2020 -Isolated polygons <10 km2 and distant from other polygons were manually removed. The smoothing/aggregation procedure increased the total area of the permissive tract from ca. 8400 to 9200 km2; February 2020. Additional process details are described in Supplementary Data B of this release.

Process_Date: 202002

Process_Step:

Process_Description:

Tungsten-bearing mineral sites in ARDF within the study area were extracted. The references fields were removed and new fields added as described in the attribute description section.

Process_Date: 201908

Process_Step:

Process_Description:

A Python script (MPM.py, included in the GIS folder), was used to score each feature in the feature class primary_attributes for tungsten skarn mineral potential. The script queries the ARDF and AGDB3 source datasets and assigns scores based on the parameters specified in Supplementary Data table C. The script automatically populates the fields in qualitative_assessment with the output.

Process_Date: 201911

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: primary_attributes
Entity_Type_Definition:

Polygon feature class depicting permissive tracts for tungsten (W) skarn

Entity_Type_Definition_Source: Producer-defined

Attribute:

Attribute_Label: OBJECTID
Attribute_Definition: Internal feature number
Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: SHAPE
Attribute_Definition: Feature geometry
Attribute_Definition_Source: Esri
Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features

Attribute:

Attribute_Label: POTENTIAL
Attribute_Definition:

The relative potential - Low, Medium, or High - for W skarn mineralization. Relative potential is based on numerical thresholds from the range of TOTAL_SCORE values in the qualitative_assessment table, based on the natural Jenks method.

Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: LOW
Enumerated_Domain_Value_Definition:

Low potential for W skarn mineralization; TOTAL_SCORE >= 0 and TOTAL_SCORE <= 3

Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: MED
Enumerated_Domain_Value_Definition:

Medium potential for W skarn mineralization; TOTAL_SCORE >= 4 and TOTAL_SCORE <= 10

Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: HIGH
Enumerated_Domain_Value_Definition: High potential for W skarn mineralization; TOTAL_SCORE >= 11
Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: UNKNOWN
Enumerated_Domain_Value_Definition:

Insufficient data present to estimate potential for W skarn mineralization

Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute:

Attribute_Label: CERTAINTY
Attribute_Definition:

The relative level of certainty - low, medium, or high - of the POTENTIAL estimate; Relative values correspond to a range of numerical values calculated internally in the Python script based on the input data that contributed to the potential scoring, as outlined in Table C.

Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: LOW
Enumerated_Domain_Value_Definition:

Low certainty of the assigned W skarn mineralization potential; corresponds to numerical score of 0 - 3 (inclusive)

Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: MED
Enumerated_Domain_Value_Definition:

Medium certainty of the assigned W skarn mineralization potential; corresponds to numerical score of 4 - 10 (inclusive)

Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: HIGH
Enumerated_Domain_Value_Definition:

High certainty of the assigned W skarn mineralization potential; corresponds to numerical score of >= 11

Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: UNKNOWN
Enumerated_Domain_Value_Definition:

Unknown certainty, assigned only when W skarn mineralization potential is unknown

Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute:

Attribute_Label: SYMBOL
Attribute_Definition:

A field that combines the values of POTENTIAL and CERTAINTY for symbology

Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: HIGH,HIGH
Enumerated_Domain_Value_Definition: High potential and high certainty
Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: HIGH,MED
Enumerated_Domain_Value_Definition: High potential, medium certainty
Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: MED,HIGH
Enumerated_Domain_Value_Definition: Medium potential, high certainty
Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: MED,MED
Enumerated_Domain_Value_Definition: Medium potential and certainty
Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: MED,LOW
Enumerated_Domain_Value_Definition: Medium potential, low certainty
Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: LOW,MED
Enumerated_Domain_Value_Definition: Low potential, medium certainty
Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: LOW,LOW
Enumerated_Domain_Value_Definition: Low potential and certainty
Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: UNKNOWN
Enumerated_Domain_Value_Definition: Unknown potential/certainty
Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute:

Attribute_Label: SHAPE_Length
Attribute_Definition: Length of feature in internal units
Attribute_Definition_Source: Esri
Attribute_Domain_Values:

Unrepresentable_Domain: Positive real numbers that are automatically generated

Attribute:

Attribute_Label: SHAPE_Area
Attribute_Definition: Area of feature in internal units squared
Attribute_Definition_Source: Esri
Attribute_Domain_Values:

Unrepresentable_Domain: Positive real numbers that are automatically generated

Attribute:

Attribute_Label: Poly_ID
Attribute_Definition:

A unique identifier field used to relate the attribute tables primary_attributes and qualitative_assessment. It was generated from intersecting the W skarn permissive tract polygons with the 12-digit hydrologic units (drainages) polygons.

Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Unrepresentable_Domain:

A feature number that is automatically generated by concatenating the unique HUC12 number from the input National Hydrography Dataset (NHD) with the object ID number from the input W skarn permissive tract.

Attribute:

Attribute_Label: Country
Attribute_Definition: The country the feature is located in
Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: USA
Enumerated_Domain_Value_Definition: United States of America
Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute:

Attribute_Label: State
Attribute_Definition: The state/province the feature is located in
Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: AK
Enumerated_Domain_Value_Definition: Alaska
Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute:

Attribute_Label: Quant
Attribute_Definition:

Indicates whether or not this feature was included in the area of a quantitative mineral resource assessment

Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Yes
Enumerated_Domain_Value_Definition: The feature is part of an area that was quantitatively assessed
Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: No
Enumerated_Domain_Value_Definition:

The feature is not part of an area that was quantitatively assessed

Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute:

Attribute_Label: Asmt_type
Attribute_Definition:

Indicates what type of mineral resource assessment the feature was included in and references to the methodology of that type.

Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Qualitative (USGS - Jones et al. 2015; this study)
Enumerated_Domain_Value_Definition:

A qualitative assessment was conducted based on the methodology of Jones et al., 2015 (see lineage) and this study

Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Quantitative (3-part; Singer and Menzie (2010) and this study)
Enumerated_Domain_Value_Definition:

A quantitative assessment was conducted based on the USGS 3-part process (Singer and Menzie, 2010; see lineage) and other methods described in this study

Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute:

Attribute_Label: Dep_type
Attribute_Definition: The mineral deposit type assessed
Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: W skarn
Enumerated_Domain_Value_Definition: The type of mineral deposit assessed is tungsten (W) skarn
Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute:

Attribute_Label: Min_sys
Attribute_Definition:

The general mineral system environment of the deposit type being assessed

Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: intrusion-related
Enumerated_Domain_Value_Definition:

mineral system environment genetically related to an intermediate-felsic intrusive body

Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute:

Attribute_Label: Commodity
Attribute_Definition: The commodity being assessed
Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: WO3
Enumerated_Domain_Value_Definition: Tungsten trioxide
Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute:

Attribute_Label: Tract_name
Attribute_Definition: Informal name given to the subtract the polygon is part of
Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Southern Yukon-Tanana Upland
Enumerated_Domain_Value_Definition:

The portion of the Yukon-Tanana Upland south of the Tanana River, as defined in Case et al. 2021.

Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Western Yukon-Tanana Upland
Enumerated_Domain_Value_Definition:

The portion of the Yukon-Tanana Upland west of the Eagle quadrangle and north of the Tanana River, as defined in Case et al. 2021.

Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Eastern Yukon-Tanana Upland
Enumerated_Domain_Value_Definition:

The portion of the Yukon-Tanana Upland east of the Big Delta quadrangle and north of the Tanana River, as defined in Case et al. 2021.

Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute:

Attribute_Label: Coded_ID
Attribute_Definition: A unique identifier for the sub-tract
Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Unrepresentable_Domain:

The value is an alpha-numeric code starting with the ISO 3166 numeric country code, followed by the state abbreviation, the deposit type - skW (tungsten skarn), and the sub-tract number: 001 = Western YTU; 002 = Eastern YTU; 003 = Southern YTU

Attribute:

Attribute_Label: Scales
Attribute_Definition:

The range of map scales included in the source datasets used to generate the permissive tracts

Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1:500,000
Range_Domain_Maximum: 1:63,360

Attribute:

Attribute_Label: Scale_assmt
Attribute_Definition: The map scale assessment
Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 1:250,000
Enumerated_Domain_Value_Definition: Assessment was conducted at a map scale of 1:250,000
Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute:

Attribute_Label: Geo_setting
Attribute_Definition:

A general description of the tectonic/geologic setting of the permissive tract

Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Unrepresentable_Domain: Rifted margin and arc subduction

Attribute:

Attribute_Label: Geology
Attribute_Definition:

A general description of the major geologic assemblages present in the sub-tract.

Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Unrepresentable_Domain: A textual description of the major geologic units/assemblages

Attribute:

Attribute_Label: Begin_age
Attribute_Definition:

The age of the oldest known rocks present in the sub-tract, derived from the Geologic Map of Alaska (Wilson and others, 2015)

Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Unrepresentable_Domain: Early Devonian

Attribute:

Attribute_Label: End_age
Attribute_Definition:

The age of the youngest known rocks present in the sub-tract, derived from the Geologic Map of Alaska (Wilson and others, 2015), excluding Quaternary units

Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Unrepresentable_Domain: Tertiary

Attribute:

Attribute_Label: N_Sites
Attribute_Definition:

The number of known Alaska Resource Data File tungsten skarn sites in the sub-tract

Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 20

Attribute:

Attribute_Label: Asmt_date
Attribute_Definition: The year the assessment was conducted
Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Unrepresentable_Domain: 2019

Attribute:

Attribute_Label: Asmt_depth
Attribute_Definition: The depth from surface included in the assessment
Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 0.5
Attribute_Units_of_Measure: kilometers

Detailed_Description:

Entity_Type:

Entity_Type_Label: qualitative_assessment
Entity_Type_Definition:

This table contains detailed mineral potential scoring information f or each feature in primary_attributes and is a table in the AK_Wskarn_tract geodatabase. Note that in the KML file representation (primary_attributes_qual_assessment) contains a merging of the primary_attributes geospatial data with the qualitative_assessment table data.

Entity_Type_Definition_Source: Producer-defined

Attribute:

Attribute_Label: OBJECTID
Attribute_Definition: Internal feature number
Attribute_Definition_Source: Esri
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1
Range_Domain_Maximum: 616

Attribute:

Attribute_Label: Poly_ID
Attribute_Definition:

A unique identifier field used to relate this table to polygon feature class primary_attributes. It was generated from intersecting the W skarn permissive tract polygons with the 12-digit hydrologic units (drainages) polygons.

Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Unrepresentable_Domain:

Attribute:

Attribute_Label: TOTAL_SCORE
Attribute_Definition:

The calculated total W skarn potential score of the feature, based on the sum of the highest-ranked ARDF site in the feature and the highest score of the geochemistry sub-datasets

Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 20

Attribute:

Attribute_Label: SED_SCORE
Attribute_Definition:

The from either the AGDB3 or 2019 reanalyzed stream sediment datasets. Only the highest score of either datasets. Values [null] and -9999 indicate no data is taken.

Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 15

Attribute:

Attribute_Label: SED_19_SCORE
Attribute_Definition:

The calculated sub-score from AGDB3 stream sediment samples reanalyzed in 2019. A value of zero indicates no data or below the minimum threshold.

Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 10

Attribute:

Attribute_Label: RCK_SCORE
Attribute_Definition:

The calculated sub-score from the AGDB3 rock dataset. A value of 0 indicates below the minimum threshold. [null] or -9999 indicate no sample or no analysis.

Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 12

Attribute:

Attribute_Label: HMC_SCORE
Attribute_Definition:

The calculated sub-score from the heavy mineral concentrate dataset in the AGDB3 database. A value of 0 indicates below the minimum threshold. [null] or -9999 indicate no sample or no analysis.

Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 15

Attribute:

Attribute_Label: MIN_SCORE
Attribute_Definition:

The calculated sub-score from the heavy mineral concentrate mineralogy dataset the AGDB3 database. A value of 0 indicates below the minimum threshold. [null] indicates no data.

Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 10

Attribute:

Attribute_Label: SED_W_SCORE
Attribute_Definition:

The calculated sub-score for tungsten in the stream sediment dataset in the AGDB3 database. A value of 0 indicates below the minimum threshold.

Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 10

Attribute:

Attribute_Label: SED_W19_SCORE
Attribute_Definition:

The calculated sub-score for tungsten from stream sediment samples reanalyzed in 2019 (see Case et al. 2021)

Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 10

Attribute:

Attribute_Label: SED_SN_SCORE
Attribute_Definition:

The calculated sub-score for tin in the sed_BV dataset from the AGDB3 database.

Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 5

Attribute:

Attribute_Label: RCK_W_SCORE
Attribute_Definition:

The calculated sub-score for tungsten from the rock geochemistry dataset the AGDB3 database.

Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 8

Attribute:

Attribute_Label: RCK_SN_SCORE
Attribute_Definition:

The calculated sub-score for tin from the rock geochemistry dataset the AGDB3 database.

Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 4

Attribute:

Attribute_Label: HMC_W_SCORE
Attribute_Definition:

The calculated sub-score for tungsten from the heavy mineral concentrate geochemistry dataset in the AGDB3 database.

Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 5

Attribute:

Attribute_Label: HMC_SN_SCORE
Attribute_Definition:

The calculated sub-score for tin from the heavy mineral concentrate geochemistry dataset in the AGDB3 database.

Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 10

Attribute:

Attribute_Label: MIN_SCH_SCORE
Attribute_Definition:

The calculated sub-score for scheelite from the heavy mineral concentrate mineralogy dataset in the AGDB3 database.

Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 10

Attribute:

Attribute_Label: MIN_CAS_SCORE
Attribute_Definition:

The calculated sub-score for cassiterite from the heavy mineral concentrate mineralogy dataset in the AGDB3 database.

Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 0
Range_Domain_Maximum: 2

Attribute:

Attribute_Label: MAX_GEOCHEM
Attribute_Definition:

Reports the sub-dataset from the AGDB3 database that contributed to the geochemistry score; only the highest score from all sub-datasets is used in TOTAL_SCORE. RCK, SED, HMC, MIN, or any combination of these values is possible; a NULL value is returned if the score from all datasets was zero.

Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: RCK
Enumerated_Domain_Value_Definition:

Indicates that the rock dataset contributed the highest geochemistry score

Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: SED
Enumerated_Domain_Value_Definition:

Indicates that the stream sediment dataset contributed the highest geochemistry score

Enumerated_Domain_Value_Definition_Source: Producer defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: HMC
Enumerated_Domain_Value_Definition:

Indicates that the heavy mineral concentrate dataset contributed the highest geochemistry score

Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: MIN
Enumerated_Domain_Value_Definition:

Indicates that the heavy mineral concentrate mineralogy dataset contributed the highest geochemistry score

Enumerated_Domain_Value_Definition_Source: Producer-defined

Detailed_Description:

Entity_Type:

Entity_Type_Label: mineral_sites_ranked
Entity_Type_Definition:

A point feature class of W skarn and related deposit type mineral sites in the study area selected from the Alaska Resource Data File. The fields are a combination of those in the Alaska Resource Data File and additional producer-defined fields. The references fields from ARDF were omitted for simplicity and users are directed to ARDF to view expanded references

Entity_Type_Definition_Source: Producer-defined

Attribute:

Attribute_Label: OBJECTID
Attribute_Definition: Internal feature number
Attribute_Definition_Source: Esri
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 1
Range_Domain_Maximum: 163

Attribute:

Attribute_Label: ARDF_no
Attribute_Definition:

ARDF - defined; The alpha-numeric identifier code for the site in the ARDF database. The two text characters correspond to the quadrangle symbol. This field can be used to join or relate this feature class to ARDF.

Attribute_Definition_Source: ARDF
Attribute_Domain_Values:

Unrepresentable_Domain: An alpha-numeric record identifier code

Attribute:

Attribute_Label: Site
Attribute_Definition:

ARDF - defined; the site name, including legacy names and aliases

Attribute_Definition_Source: ARDF
Attribute_Domain_Values:

Unrepresentable_Domain: Free-form site name field

Attribute:

Attribute_Label: W_main
Attribute_Definition:

Denotes whether or not tungsten is a main/ primary commodity for the mineral site

Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Yes
Enumerated_Domain_Value_Definition: Tungsten is a main/primary commodity
Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: No
Enumerated_Domain_Value_Definition: Tungsten is not a main/primary commodity
Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute:

Attribute_Label: Commodities_main
Attribute_Definition: ARDF - defined; the primary mineral commodities of the site
Attribute_Definition_Source: ARDF
Attribute_Domain_Values:

Unrepresentable_Domain: An alphabetical list of mineral commodities

Attribute:

Attribute_Label: Quad_250
Attribute_Definition:

ARDF - defined; The two-letter code for the USGS 1:250,000 quadrangle the site is located in.

Attribute_Definition_Source: ARDF
Attribute_Domain_Values:

Codeset_Domain:

Codeset_Name: USGS Alaska 1:250,000 quadrangles
Codeset_Source: https://mrdata.usgs.gov/ak/quadrangles/

Attribute:

Attribute_Label: Quad_63360
Attribute_Definition:

ARDF-defined; The three-character code for the USGS 1:63,360 quadrangle the site is located in.

Attribute_Definition_Source: ARDF
Attribute_Domain_Values:

Codeset_Domain:

Codeset_Name: USGS map quadrangle index: 1:63,360 scale maps of Alaska
Codeset_Source: https://mrdata.usgs.gov/metadata/ak63-v2.html

Attribute:

Attribute_Label: Latitude
Attribute_Definition:

The latitude / Y-coordinate of the site, in decimal degrees. Datum uncertain at time of download but either NAD27 or NAD83.

Attribute_Definition_Source: ARDF
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: 63.013
Range_Domain_Maximum: 65.635
Attribute_Units_of_Measure: Decimal degrees

Attribute:

Attribute_Label: Longitude
Attribute_Definition:

The longitude / X-coordinate of the site, in decimal degrees. Datum uncertain at time of download but either NAD27 or NAD83.

Attribute_Definition_Source: ARDF
Attribute_Domain_Values:

Range_Domain:

Range_Domain_Minimum: -149.93
Range_Domain_Maximum: -141.091
Attribute_Units_of_Measure: Decimal degrees

Attribute:

Attribute_Label: Location
Attribute_Definition: ARDF - defined; a description of the site location
Attribute_Definition_Source: ARDF
Attribute_Domain_Values:

Unrepresentable_Domain: Free-form text description of the location

Attribute:

Attribute_Label: Commodities_other
Attribute_Definition:

ARDF - defined; a list of other mineral commodities at the site that are not primary

Attribute_Definition_Source: ARDF
Attribute_Domain_Values:

Unrepresentable_Domain: An alphabetical list of mineral commodities

Attribute:

Attribute_Label: Ore_minerals
Attribute_Definition: ARDF - defined; a list of ore minerals described at the site
Attribute_Definition_Source: ARDF
Attribute_Domain_Values:

Unrepresentable_Domain: An alphabetical list of ore minerals

Attribute:

Attribute_Label: Gangue_minerals
Attribute_Definition:

ARDF - defined; a list of gangue minerals described at the site. Some records are empty.

Attribute_Definition_Source: ARDF
Attribute_Domain_Values:

Unrepresentable_Domain: An alphabetical list of gangue minerals

Attribute:

Attribute_Label: Site_type
Attribute_Definition:

ARDF - defined; the type of mineral site: mine, prospect or occurrence

Attribute_Definition_Source: ARDF
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Mine (or mines)
Enumerated_Domain_Value_Definition: The mineral site is or was a mine
Enumerated_Domain_Value_Definition_Source: ARDF

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Prospect (or prospects)
Enumerated_Domain_Value_Definition: The mineral site is classified as a mineral prospect
Enumerated_Domain_Value_Definition_Source: ARDF

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Occurrence (or occurrences)
Enumerated_Domain_Value_Definition: The mineral site is classified as a mineral occurrence
Enumerated_Domain_Value_Definition_Source: ARDF

Attribute:

Attribute_Label: Site_status
Attribute_Definition: ARDF- defined; the operational status of the site
Attribute_Definition_Source: ARDF
Attribute_Domain_Values:

Unrepresentable_Domain:

Free-form text description of the operational status of the site, such as Active, Inactive, or Undetermined

Attribute:

Attribute_Label: Production
Attribute_Definition: ARDF - defined; indicates if the site has produced ore
Attribute_Definition_Source: ARDF
Attribute_Domain_Values:

Unrepresentable_Domain:

An open-ended description of whether or not the site has produced, and approximately how much.

Attribute:

Attribute_Label: Generic_model
Attribute_Definition:

ARDF - defined; the generic deposit type classification for the site

Attribute_Definition_Source: ARDF
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: NULL
Enumerated_Domain_Value_Definition:

A generic deposit type classification has not yet been made for the site

Enumerated_Domain_Value_Definition_Source: ARDF

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Placer deposits (Garnett and Bassett, 2005)
Enumerated_Domain_Value_Definition:

The site is classified as a placer deposit based on the classification of Garnett, R., and Bassett, N.C.. (2005), Placer deposits, Econ Geol 100th Anniv Vol. 813-843.

Enumerated_Domain_Value_Definition_Source: ARDF

Attribute:

Attribute_Label: Deposit_model
Attribute_Definition: ARDF - defined; the deposit model classification of the site
Attribute_Definition_Source: ARDF
Attribute_Domain_Values:

Unrepresentable_Domain: Open-ended deposit type classification; no formal schema

Attribute:

Attribute_Label: MRAT_deposit_classification
Attribute_Definition:

Additional field; The deposit type classification determined in this study

Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Unrepresentable_Domain: Open-ended description of the deposit type classification

Attribute:

Attribute_Label: Simplified_deposit_group
Attribute_Definition: A simplified deposit type classification for the site.
Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Unrepresentable_Domain: A deposit type classification

Attribute:

Attribute_Label: Classification_reasoning
Attribute_Definition:

Additional field; The reasoning and justification for making the deposit type classification

Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Unrepresentable_Domain: Open-ended explanation field

Attribute:

Attribute_Label: MRAT_ranking
Attribute_Definition:

Site ranking criteria used to assess importance of W-bearing localities.

Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 10
Enumerated_Domain_Value_Definition: Known deposit with reliably identified W resources
Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 5
Enumerated_Domain_Value_Definition: Past W producer or explored prospect with some resource data
Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 4
Enumerated_Domain_Value_Definition:

Past W producer or prospect with no resource data or data suggests low grade or too small. May have been mined for a different commodity.

Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 3
Enumerated_Domain_Value_Definition: W skarn occurrence with no resource data available
Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 2
Enumerated_Domain_Value_Definition:

Prospect or occurrence with W; scheelite mentioned among minerals present

Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: 1
Enumerated_Domain_Value_Definition:

Prospect or occurrence with W. Placer could be related to an upstream W skarn site

Enumerated_Domain_Value_Definition_Source: Producer-defined

Attribute:

Attribute_Label: MRAT_ranking_reason
Attribute_Definition:

Describes the reasoning/justification for the assigned MRAT_Ranking in accordance with the ranking criteria described in Case et al. 2021.

Attribute_Definition_Source: Producer-defined
Attribute_Domain_Values:

Unrepresentable_Domain: A free-form text description field

Attribute:

Attribute_Label: Geologic_description
Attribute_Definition: ARDF - defined; A geologic description of the site
Attribute_Definition_Source: ARDF
Attribute_Domain_Values:

Unrepresentable_Domain: Open-ended description field

Attribute:

Attribute_Label: Workings_exploration
Attribute_Definition:

ARDF - defined; A description of the workings and exploration done at the site

Attribute_Definition_Source: ARDF
Attribute_Domain_Values:

Unrepresentable_Domain: Open-ended description field

Attribute:

Attribute_Label: Additional_comments
Attribute_Definition:

ARDF - defined; Additional miscellaneous comments on the site; empty fields are null

Attribute_Definition_Source: ARDF
Attribute_Domain_Values:

Unrepresentable_Domain:

Open-ended description field; records with no additional comments are null

Attribute:

Attribute_Label: Reporter
Attribute_Definition:

ARDF - defined; The name of the individual(s) who wrote and/or updated the site record

Attribute_Definition_Source: ARDF
Attribute_Domain_Values:

Unrepresentable_Domain: Open-ended list of names

Attribute:

Attribute_Label: Last_report_date
Attribute_Definition: ARDF - defined; The date of the last update of the record
Attribute_Definition_Source: ARDF
Attribute_Domain_Values:

Unrepresentable_Domain: A date range with no definable upper limit

Attribute:

Attribute_Label: MRDS_no
Attribute_Definition:

ARDF - defined (legacy field); The corresponding Mineral Resource Data System record number

Attribute_Definition_Source: ARDF
Attribute_Domain_Values:

Unrepresentable_Domain: A list of MRDS numbers

Attribute:

Attribute_Label: Age
Attribute_Definition: ARDF - defined; The geologic age of the site
Attribute_Definition_Source: ARDF
Attribute_Domain_Values:

Unrepresentable_Domain: Open-ended description of the geologic age

Attribute:

Attribute_Label: Deposit_model_number
Attribute_Definition:

ARDF - defined; The Cox and Singer (1992) deposit model number, if assigned

Attribute_Definition_Source: ARDF
Attribute_Domain_Values:

Unrepresentable_Domain: Single or multiple alphanumeric deposit model numbers

Attribute:

Attribute_Label: Alteration
Attribute_Definition: ARDF-defined; A description of alteration at the site
Attribute_Definition_Source: ARDF
Attribute_Domain_Values:

Unrepresentable_Domain: Open-ended description field

Attribute:

Attribute_Label: Production_notes
Attribute_Definition: ARDF - defined; A description of any production at the site
Attribute_Definition_Source: ARDF
Attribute_Domain_Values:

Unrepresentable_Domain: Open-ended description field

Attribute:

Attribute_Label: Reserves
Attribute_Definition:

ARDF - defined; A description of known mineral reserves at the site

Attribute_Definition_Source: ARDF
Attribute_Domain_Values:

Unrepresentable_Domain: Open-ended description of mineral reserves

Attribute:

Attribute_Label: Primary_reference
Attribute_Definition:

An abbreviated reference for the main source of information for the record. See ARDF for expanded references.

Attribute_Definition_Source: ARDF
Attribute_Domain_Values:

Unrepresentable_Domain: Open-ended abbreviated reference

Attribute:

Attribute_Label: State
Attribute_Definition: ARDF - defined; The state the site is located in
Attribute_Definition_Source: ARDF
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: AK
Enumerated_Domain_Value_Definition: Alaska
Enumerated_Domain_Value_Definition_Source: ARDF

Attribute:

Attribute_Label: Quadrangle
Attribute_Definition:

ARDF - defined; The full name of the 1:250,000 quadrangle the site is located in

Attribute_Definition_Source: ARDF
Attribute_Domain_Values:

Codeset_Domain:

Codeset_Name: Alaska map quadrangles at 1:250,000 scale
Codeset_Source: https://mrdata.usgs.gov/catalog/cite-view.php?cite=855

Attribute:

Attribute_Label: Shape
Attribute_Definition: Internal feature type definition
Attribute_Definition_Source: Esri
Attribute_Domain_Values:

Enumerated_Domain:

Enumerated_Domain_Value: Point
Enumerated_Domain_Value_Definition: The feature is a point
Enumerated_Domain_Value_Definition_Source: Esri

Qualitative Mineral Potential Map of Tungsten Skarn in the Yukon-Tanana Uplands, Eastern Alaska, USA, 2021

Metadata: