1. Mineral Resources
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  3. Mineral Resource Data System (MRDS)

Unnamed

Occurrence in Alaska, United States with commodity Gold
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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. Alteration
  8. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Mining district
  11. Links to other databases
  12. Bibliographic references
  13. Reporter information

Geologic information

Identification information

Deposit ID 10003289
MRDS ID A106032
Record type Site
Current site name Unnamed

Geographic coordinates

Geographic coordinates: -176.63565, 51.84474 (WGS84)
Relative position Inactive quarry near top of divide between Finger Bay and Sweeper Cove.

Site location context

Political divisions (FIPS codes)

Aleutians West(Census area)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Adak C-2(quadrangle 1:63,360 scale)

Adak(quadrangle 1:100,000 scale)

Adak SE(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Western Aleutian Islands(hydrologic unit)

Aleutian Islands(hydrologic accounting unit)

Southwest(hydrologic subregion)

Alaska(hydrologic region)

Federal lands

Aleut Corporation(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
Gold Primary

Materials information

Materials Type of material
Quartz Gangue

Alteration

  • (Local) Introduction of silica (slicification), possibly associated with emplacement of granodiorite. Possible regional scale low-grade metamorphism.

Nearby scientific data

(1) -176.63565, 51.84474
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Mineralization occurs in dark green to black andesite(?) containing minor amounts of sulfide minerals. Locally, volcanic rocks are brecciated, silica-cemented and contain druzzy quartz. Minor quartz stringers locally cut volcanic rocks. Exposure is is a quarry located on the contact between volcanic rocks and fine- to medium-grained hornblende granodiorite porphyry.
  • Age = Tertiary

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Aleutians

Comments on the workings information

  • Workings / Exploration = Brief field examination and sampling. Sample (93TL 105c) yielded 20 ppb Au and sample 93TL 105b yielded 100 ppm Pb and 2,000 ppm Ba.

Reference information

Bibliographic references

  • Deposit

    UNPUBLISHED DATA U.S. GEOLOGICAL SURVEY, 1994

  • Deposit

    Unpublished data, U.S. Geological Survey, 1994

Reporter information

Type Date Name Affiliation Comment
Reporter 22-FEB-1996 F.H. Wilson U.S. Geological Survey
Reporter 22-FEB-1996 T.D. Light 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.