Metadata: Identification_Information: Citation: Citation_Information: Originator: U.S. Geological Survey Title: National Mineral Resource Assessment 1998 Publication_Date: 2001 Series_Information: Series_Name: Circular Issue_Identification: 1178 Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Online_Linkage: https://doi.org/10.3133/cir1178 Online_Linkage: https://mrdata.usgs.gov/nmra/ Description: Abstract: Estimates of the tonnages and amounts of contained metal in undiscovered deposits, mineral deposit types. Purpose: As the Nations population grows and its economy matures, greater attention is being paid to such issues as land use and environmental quality, as well as to sustainability of mineral supplies to provide for the needs of future generations. National Mineral Resource Assessments provide a framework for addressing these issues by monitoring the continuing depletion of the Nations nonrenewable mineral wealth and by contributing information required to manage resource extraction while minimizing consequent environmental effects. For responsible stewardship of the Nations lands and resources, it is important to know in which areas future mineral resources may be located and how much metal such resources might contain (McCammon and Briskey, 1992). Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1996 Currentness_Reference: Publication date of the original report; subsequent reports elaborated and expanded on these results Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -179.14303704601 East_Bounding_Coordinate: -67.41278527303 North_Bounding_Coordinate: 71.3963032638234 South_Bounding_Coordinate: 28.9786952850653 Access_Constraints: none Use_Constraints: none Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme: Theme_Keyword_Thesaurus: Alexandria Digital Library Feature Type Thesaurus Theme_Keyword: mineral deposit areas Theme: Theme_Keyword_Thesaurus: General glossary for mineral resources spatial data Theme_Keyword: KML Theme_Keyword: shapefile Theme: Theme_Keyword_Thesaurus: Mineral Resources Data System commodity types Theme_Keyword: Copper Theme_Keyword: Gold Theme_Keyword: Lead Theme_Keyword: Silver Theme_Keyword: Zinc Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: copper Theme_Keyword: economic geology Theme_Keyword: geospatial datasets Theme_Keyword: gold Theme_Keyword: lead Theme_Keyword: metallic mineral resources Theme_Keyword: natural resource assessment Theme_Keyword: silver Theme_Keyword: zinc Place: Place_Keyword_Thesaurus: Common geographic areas Place_Keyword: fUS = United States Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Peter N Schweitzer Contact_Organization: MIDWEST REGION Contact_Position: Geologist Contact_Address: Address_Type: mailing address Address: Mail Stop 954 12201 Sunrise Valley Dr City: Reston State_or_Province: VA Postal_Code: 20192-0002 Country: USA Contact_Voice_Telephone: 703-648-6533 Contact_Facsimile_Telephone: 703-648-6252 Contact_Electronic_Mail_Address: pschweitzer@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: https://mrdata.usgs.gov/nmra/nmra-example.png Browse_Graphic_File_Description: Reduced-size image of map interface showing permissive tracts for Hot spring Au deposits, (673 x 364 pixels) Browse_Graphic_File_Type: PNG Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: These data are not observational but are interpretations made by the original authors, so accuracy must be judged by evaluating the source publications. For consistency and simplicity, some attribute values were shortened; where the original indicated that no quantitative assessment was carried out for a tract, the values in this database are simply "NA". Logical_Consistency_Report: Assessed permissive tracts in Alaska were handled separately from those in the conterminous US even though in many cases the deposit models considered would have been the same. However users should assume that the concept envisioned in the deposit models for Alaskan tracts might differ in particulars from the concept used in the conterminous US. Completeness_Report: Hawaii was not assessed. In addition a number of tracts indicate that no quantitative assessment was made, even though the rationale information will indicate some of the thinking that went into the decision not to produce a quantitative estimate for those tracts. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: While these tracts are defined somewhat arbitrarily, their boundaries should be understood as broad approximations of the areas intended for assessment by the authors. In some cases it seems clear that the geometries digitized were much more precise than the assessors actually intended, so users should not assume any point close to a boundary has or does not have characteristics of the nearby polygon. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: The U.S. Geological Survey National Mineral Resource Assessment Team Publication_Date: 2000 Title: 1998 Assessment of Undiscovered Deposits of Gold, Silver, Copper, Lead, and Zinc in the United States Series_Information: Series_Name: Circular Issue_Identification: 1178 Publication_Information: Publication_Place: Reston, Virginia Publisher: U.S. Geological Survey Online_Linkage: https://pubs.usgs.gov/circ/c1178/ Type_of_Source_Media: digital files Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2000 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: cir1178 Source_Contribution: Permissive tracts for the conterminous US with assessment information Source_Information: Source_Citation: Citation_Information: Originator: U.S. Geological Survey National Mineral Resource Assessment Team Originator: Schruben, Paul G. (compiler) Publication_Date: 2002 Title: Assessment of Undiscovered Deposits of Gold, Silver, Copper, Lead, and Zinc in the United States: A Portable Document (PDF) Recompilation of USGS Open-File Report 96-96 and Circular 1178 Series_Information: Series_Name: Open-File Report Issue_Identification: 2002-198 Publication_Information: Publisher: U.S. Geological Survey Publication_Place: Reston, Virginia Online_Linkage: https://pubs.usgs.gov/of/2002/of02-198/ Type_of_Source_Media: digital files Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2002 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: ofr2002198 Source_Contribution: Permissive tracts for Alaska with assessment information Source_Information: Source_Citation: Citation_Information: Originator: Ludington, S. D. Originator: Cox, D. P. Originator: McCammon, R. B. Publication_Date: 1996 Title: Data Base for a National Mineral-Resource Assessment of Undiscovered Deposits of Gold, Silver, Copper, Lead, and Zinc in the Conterminous United States Series_Information: Series_Name: Open-File Report Issue_Identification: 96-96 Publication_Information: Publisher: U.S. Geological Survey Publication_Place: Reston, Virginia Online_Linkage: https://pubs.usgs.gov/of/1996/of96-096/ Type_of_Source_Media: digital files Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1996 Source_Currentness_Reference: publication date Source_Citation_Abbreviation: ofr9696 Source_Contribution: Original report used for comparison Process_Step: Process_Description: Permissive tracts were drawn from the previously published reports and entered into PostgreSQL relational database with PostGIS used to express the geometry. Additional web interfaces were developed to make it easier for people outside USGS to find, get, and use these data. Process_Date: 2014 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Point_and_Vector_Object_Information: SDTS_Terms_Description: SDTS_Point_and_Vector_Object_Type: G-polygon Point_and_Vector_Object_Count: 5769 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.0001 Longitude_Resolution: 0.0001 Geographic_Coordinate_Units: decimal degrees Geodetic_Model: Horizontal_Datum_Name: World Geodetic System 1984 Ellipsoid_Name: WGS 84 Semi-major_Axis: 6378137 Denominator_of_Flattening_Ratio: 298.257 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: tract Entity_Type_Definition: Estimates of the number of undiscovered deposits in each tract Attribute: Attribute_Label: tract Attribute_Definition: Coded identifier grouping polygons assessed for the same type of deposit in a given geographic region Attribute_Domain_Values: Unrepresentable_Domain: Short texts combining a region abbreviation with a sequence number, purely to differentiate the tract from other tracts, without additional scientific significance. Attribute: Attribute_Label: layer Attribute_Definition: Coded identifier abbreviating the deposit type Attribute_Domain_Values: Unrepresentable_Domain: Short codes (4 or 5 letters and numbers) used to abbreviate the deposit types Attribute: Attribute_Label: dep_type Attribute_Definition: Type of mineral deposit for which the number of undiscovered deposits in the tract was estimated Attribute_Domain_Values: Unrepresentable_Domain: Plain texts naming the deposit model used for the assessment; approximately matching the model title used in the published source (indicated by the dep_model field) Attribute: Attribute_Label: dep_model Attribute_Definition: Coded identifier used in Cox and Singer (1986) and related references to refer to the deposit type Attribute_Domain_Values: Unrepresentable_Domain: Coded identifiers indicating the model used for the assessment; most refer to Cox and Singer (1986), some indicate two models using + as a conjunction, a few indicate other USGS publications Attribute: Attribute_Label: mark3_id Attribute_Definition: Coded identifier for the deposit type used by the MARK3 mineral assessment software Attribute_Domain_Values: Codeset_Domain: Codeset_Name: MARK3 model identifiers Codeset_Source: https://pubs.usgs.gov/of/1998/0356/report.pdf Attribute: Attribute_Label: age Attribute_Definition: General chronostratigraphic age in which mineralization is anticipated to have occurred Attribute_Domain_Values: Unrepresentable_Domain: Geologic time periods or ranges expressed as the names of chronostratigraphic units. Attribute: Attribute_Label: region Attribute_Definition: General geographic region in which the tract is located Attribute_Domain_Values: Unrepresentable_Domain: Names indicating generalized geographic regions which are described more precisely in USGS Circular 1178 Attribute: Attribute_Label: state Attribute_Definition: States in which the tract is primarily located (space-separated list of values) Attribute_Domain_Values: Codeset_Domain: Codeset_Name: 2-letter postal abbreviations for US states Codeset_Source: USPS Attribute: Attribute_Label: p_90 Attribute_Definition: Estimated number of undiscovered deposits in the tract, with 90% confidence Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 80 Attribute_Units_of_Measure: deposits Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: na Enumerated_Domain_Value_Definition: No quantitative assessment of the tract was made. Attribute: Attribute_Label: p_50 Attribute_Definition: Estimated number of undiscovered deposits in the tract, with 50% confidence Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 600 Attribute_Units_of_Measure: deposits Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: na Enumerated_Domain_Value_Definition: No quantitative assessment of the tract was made. Attribute: Attribute_Label: p_10 Attribute_Definition: Estimated number of undiscovered deposits in the tract, with 10% confidence Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 800 Attribute_Units_of_Measure: deposits Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: na Enumerated_Domain_Value_Definition: No quantitative assessment of the tract was made. Attribute: Attribute_Label: p_05 Attribute_Definition: 0 Estimated number of undiscovered deposits in the tract, with 5% confidence Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0 Range_Domain_Maximum: 800 Attribute_Units_of_Measure: deposits Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: na Enumerated_Domain_Value_Definition: No quantitative assessment of the tract was made. Attribute: Attribute_Label: p_01 Attribute_Definition: Estimated number of undiscovered deposits in the tract, with 1% confidence Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 1 Range_Domain_Maximum: 800 Attribute_Units_of_Measure: deposits Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: na Enumerated_Domain_Value_Definition: No quantitative assessment of the tract was made. Attribute: Attribute_Label: p_0 Attribute_Definition: Estimated probability that there are no undiscovered deposits of the specified type in this tract Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 0.15 Range_Domain_Maximum: 0.99 Attribute_Units_of_Measure: probability in percent Attribute_Domain_Values: Enumerated_Domain: Enumerated_Domain_Value: na Enumerated_Domain_Value_Definition: No quantitative assessment of the tract was made. Attribute: Attribute_Label: estimators Attribute_Definition: Names of the scientists who provided the estimates of undiscovered deposits Attribute_Domain_Values: Unrepresentable_Domain: Last names of members of the assessment team, in comma-separated lists. Some names include a first initial to clarify the identity of the estimator. Attribute: Attribute_Label: area_km2 Attribute_Definition: Total area of the tract, in square kilometers Attribute_Domain_Values: Range_Domain: Range_Domain_Minimum: 29 Range_Domain_Maximum: 702400 Attribute_Units_of_Measure: square kilometers Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Peter N Schweitzer Contact_Organization: USGS Geology, Energy, and Minerals Science Center Contact_Position: Geologist Contact_Address: Address_Type: mailing address Address: 12201 Sunrise Valley Drive City: Reston State_or_Province: VA Postal_Code: 20192-0002 Country: USA Contact_Voice_Telephone: 703-648-6533 Contact_Facsimile_Telephone: 703-648-6252 Contact_Electronic_Mail_Address: pschweitzer@usgs.gov Resource_Description: Circular 1178 with data from OFR 02-198 Distribution_Liability: This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards (or with the North American Stratigraphic Code). Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: WMS Format_Version_Number: 1.1,1 Format_Information_Content: Permissive tracts for deposit types containing copper, silver, gold, lead, and zinc with estimates of the number of undiscovered deposits in each tract. Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://mrdata.usgs.gov/services/nmra?request=GetCapabilities&service=WMS&version=1.3.0 Digital_Form: Digital_Transfer_Information: Format_Name: Shapefile Format_Version_Number: 1.0 Format_Information_Content: Permissive tracts for mineral deposits containing copper, gold, silver, lead, and zinc in the continental US and Alaska, by deposit type with estimates of the number of undiscovered deposits of each type. Transfer_Size: 7.1 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://mrdata.usgs.gov/nmra/nmra.zip Digital_Form: Digital_Transfer_Information: Format_Name: KML Format_Version_Number: 2.2 Format_Information_Content: Permissive tracts for mineral deposits containing copper, gold, silver, lead, and zinc in the continental US and Alaska, by deposit type with estimates of the number of undiscovered deposits of each type. Transfer_Size: 5.5 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://mrdata.usgs.gov/nmra/nmra-kml.zip Fees: none Metadata_Reference_Information: Metadata_Date: 20201230 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Peter N Schweitzer Contact_Organization: USGS Geology, Energy, and Minerals Science Center Contact_Position: Geologist Contact_Address: Address_Type: mailing address Address: 12201 Sunrise Valley Drive City: Reston State_or_Province: VA Postal_Code: 20192-0002 Country: USA Contact_Voice_Telephone: 703-648-6533 Contact_Facsimile_Telephone: 703-648-6252 Contact_Electronic_Mail_Address: pschweitzer@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998