1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Unnamed (east of Mentasta Lake)

Occurrence in Alaska, United States with commodities Copper, Silver
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Commodities
  6. Materials information
  7. Host and associated rocks
  8. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Mining district
  11. Links to other databases
  12. Bibliographic references
  13. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10000741
MRDS ID A011379
Record type Site
Current site name Unnamed (east of Mentasta Lake)
Alternate or previous names Unnamed

Geographic coordinates

Geographic coordinates: -143.65874, 62.8858 (WGS84)
Relative position Best location: Richter, 1967, ADGGS GR-30, loc. 3, fig. 2. 0.7 mi SE of Mentasta Lodge on the Glenn Hwy. Accurate within 100 ft radius.

Site location context

Political divisions (FIPS codes)

Valdez-Cordova(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Nabesna D-6(quadrangle 1:63,360 scale)

Nabesna NW(quadrangle 1:100,000 scale)

Nabesna(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Copper River(hydrologic unit)

Copper River(hydrologic accounting unit)

South Central Alaska(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Ahtna, Incorporated(ANCSA Region)

ANCSA Region NTVPIC(Type of land area)

NTVPIC(Federal land areas administered by NTVPIC)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Copper Primary
Silver Primary

Materials information

Materials Type of material
Bornite Ore
Chalcopyrite Ore
Calcite Gangue
Epidote Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Mafic Volcanic Rock > Basalt
    Rock unit name Slana Basalt
    Rock description Slana Basalt
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Mafic Volcanic Rock > Basalt

Nearby scientific data

(1) -143.65874, 62.8858
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Bornite and minor chalcopyrite in vesicle fillings and irregular segregations disseminated in 400 ft zone in epidotized basalt flows of the Triassic Nikolai Greenstone.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Chistochina

Comments on the workings information

  • Workings / Exploration = Grab sample of bornite-bearing epidotized basalt assayed: 0.02 0z/ton Au, 0.02 oz/ton Ag, 1.1% Cu, (ADGGS GR30, P. 17). Type of workings: none

Reference information

Bibliographic references

Comments on the references

  • Primary Reference = Richter, 1967, ADGGS GR 30

General comments

Subject category Comment text
Deposit Model Name = Lode: volcanogenic

Reporter information

Type Date Name Affiliation Comment
Reporter 10-FEB-1997 Leonard, K.R. U.S. Geological Survey
Reporter 10-FEB-1997 Elliott, R.L. U.S. Geological Survey
Reporter 10-FEB-1997 Richter, D.H. U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site

Authoritative Alaska resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.