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  3. Mineral Resource Data System (MRDS)

Unnamed

Occurrence in Alaska, United States with commodities Copper, 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 10003295
MRDS ID A106038
Record type Site
Current site name Unnamed

Geographic coordinates

Geographic coordinates: -176.62927, 51.86585 (WGS84)
Relative position Topographic knob at east end of dock area at Adak Naval Air Station.

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
Copper Primary
Gold Primary

Materials information

Materials Type of material
Chlorite Gangue
Zeolite Gangue

Alteration

  • (Local) Silicification and chloritization of volcanic breccia.

Nearby scientific data

(1) -176.62927, 51.86585
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Silicified volcanic breccia cut by 60-m-wide andesite(?) dike. Coats (1956) mapped knob as a plug, however the bulk of the outcrop along the road is breccia. Interstitial spaces between breccia fragments are locally zeolite(?) filled. Dike has a well developed chilled margin.
  • 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 = A number of samples (93AWs 2a-d) were collected during brief U.S. Geological Survey reconnaissance studies in 1993; all were copper-bearing in the 110-160 ppm Cu range. A few samples of andesite and andesitic volcanic breccia yielded low-level gold in the 2-6 ppb range. Float samples were found of iron-stained andesite(?) that contained 3-5 percent unidentified sulfide minerals.

Reference information

Bibliographic references

  • Deposit

    Coats, R.R., 1956, Geology of northern Adak Island, Alaska: U.S. Geological Survey Bulletin 1028-C, p. 45-67, 1 plate, scale 1:50,000.

  • 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.