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Andrew Lake

Occurrence in Alaska, United States with commodities Copper, Gold, Zinc
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Geologic information

Identification information

Deposit ID 10003292
MRDS ID A106035
Record type Site
Current site name Andrew Lake

Geographic coordinates

Geographic coordinates: -176.62622, 51.92974 (WGS84)
Relative position On shore of Andrew Lake, approximately 2 km northeast of its southernmost point. Possibly additional mineralization extents along a N 20xE extending linear to the east.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Copper Primary
Gold Primary
Zinc Primary

Alteration

  • (Local) Chloritization

Nearby scientific data

(1) -176.62622, 51.92974
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Comments on the geologic information

  • Geologic Description = Fine-grained lithic sandstone of the Andrew Lake Formation overlies volcanic breccia and massive flows(?). A linear, possibly a fault, extends northeast (about N 20xE) from the locality. Other samples of volcanic rocks collected in the vicinity of this linear were also weakly anomalous in Zn and Au.
  • Age = Tertiary

Economic information

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 single sample of the sandstone collected during brief U.S. Geological Survey reconnaissance studies in 1993 yielded 120 ppm Cu, 110 ppm Zn, and 4 ppb Au. Volcanic rock samples yielded 4 ppb Au (93TL 102c) and up to 120 ppm Zn (samples 93AWs 12 and 13).

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A106035
USGS Alaska Resource Data File ARDF AD010

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    UNPUBLISHED DATA U.S. GEOLOGICAL SURVEY, 1994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    Unpublished data, U.S. Geological Survey, 1994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