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  3. Mineral Resource Data System (MRDS)

Anderson Bay

Occurrence in Alaska, United States with commodities Copper, Molybdenum, Gold, 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. Alteration
  8. Mineral occurrence model information
  9. Nearby scientific data
  10. Economic information about the deposit and operations
  11. Mining district
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10003280
MRDS ID A106024
Record type Site
Current site name Anderson Bay

Geographic coordinates

Geographic coordinates: -166.80238, 53.65743 (WGS84)
Relative position At 2,000 ft contour east of Undamak Cove, Anderson Bay. Anomaly no. 10 of Christie (1974).

Site location context

Political divisions (FIPS codes)

Alaska(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Unalaska B-3 NE(quadrangle 1:24,000 scale)

Unalaska NW(quadrangle 1:100,000 scale)

Unalaska SE(quadrangle 1:250,000 scale)

Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Copper Primary
Molybdenum Primary
Gold Primary
Silver Primary

Materials information

Materials Type of material
Pyrite Ore

Alteration

  • (Local) Only gossan and ferruginous alteration mentioned along with moderate leaching.

Mineral occurrence model information

Model code 53
USGS model code 17
Deposit model name Porphyry Cu
Mark3 model number 4
Model code 79
USGS model code 21a
Deposit model name Porphyry Cu-Mo
Mark3 model number 2
Model code 105
USGS model code 25a-d
Deposit model name Epithermal vein, generic
Mark3 model number 119

Nearby scientific data

(1) -166.80238, 53.65743
ListMap

Economic information

Comments on the geologic information

  • Geologic Description = Country rock consists of amygdaloidal basic volcanic flows and pyroclastic rocks, often highly ferrigenous. Christie (1974) mentioned, but did not describe a nearby intrusive body. Strongly developed, but very local and irregularly distributed gossan bodies are present due to high amounts of disseminated pyrite in rock. Fracturing is poorly to moderately developed, no orientation was reported. Work focused on two zones, 75 ft (23 m) by 100 ft (30 m) in size that contain up to 5 percent disseminated pyrite.
  • Age = Cenozoic

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 = Forty-two silt and soil samples were collected during reconnasissance mapping. Samples yielded up to 64 ppm molybdenum, 215 ppm copper, 1.6 ppm silver, and 0.05 ppm gold.

Reference information

Bibliographic references

  • Deposit

    Christie, J.S., 1974, Aleut-Quintana-Duval 1974 joint venture, final report: Unpublished Quintana Minerals Corporation report, 24 p., 3 appendices, 2 maps. (Report held by the Aleut Corporation, Anchorage, Alaska.)

Comments on the references

  • Primary Reference = Christie, 1974

General comments

Subject category Comment text
Deposit Model Name = Copper porphyry, porphyry copper-molybdenum, epithermal gold vein
Deposit Model Number = 17, 21a, 25

Reporter information

Type Date Name Affiliation Comment
Reporter 03-MAY-1994 Damon Bickerstaff U.S. Geological Survey
Reporter 03-MAY-1994 F.H. Wilson 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.