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Unnamed

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

Identification information

Deposit ID 10003314
MRDS ID A106058
Record type Site
Current site name Unnamed

Geographic coordinates

Geographic coordinates: -162.33576, 55.08253 (WGS84)
Relative position Approximate location is 2 mi (3.2 km) northwest of northwest shore of King Cove Lagoon. Anomaly no. 73 of Christie (1974) and no. 5 of MacKevett and Holloway (1977, p. 9).
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Silver Primary
Gold Primary
Molybdenum Secondary
Zinc Secondary

Alteration

  • (Local) Propylitic alteration, as evidenced by presence of epidote and chlorite; also silicification.

Mineral occurrence model information

Model code 105
USGS model code 25a-d
Deposit model name Epithermal vein, generic
Mark3 model number 119

Nearby scientific data

(1) -162.33576, 55.08253
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Comments on the geologic information

  • Geologic Description = 3,000 by 6,000 ft (900 by 1,800 m) color anomaly due to weathering of disseminated pyrite in dacite and quartz diorite. In the dacite, pyrite occurs in small cavities along with clots of epidote and chlorite. The quartz diorite also contains about 1 percent pyrite in fractures. Numerous thin breccia zones cross-cut the quartz diorite, and contain highly leached and altered fragments in a black, finely ground pyritiferous matrix. One 4' (10 cm) thick barren quartz vein was noted.
  • Age = Pliocene or younger

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Alaska Peninsula

Comments on the workings information

  • Workings / Exploration = Brief reconnaissance geologic mapping and sampling reported by Christie (1974). One sample of the pyritiferous matrix of a breccia zone yielded 0.03 ppm gold and 2.7 ppm silver. Other samples from the color anomaly yielded up to 3.8 ppm silver, molybdenum to 15 ppm, and zinc to 127 ppm.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS A106058
USGS Alaska Resource Data File ARDF CB010

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.)

  • Deposit

    MacKevett, E.M., Jr., and Holloway, C.D., 1977, Map showing metalliferous mineral deposits in the western part of southern Alaska: U.S. Geological Survey Open-File Report 77-169-F, 38 p., 1 sheet, scale 1:1,000,000.

Comments on the references

  • Primary Reference = Christie, 1974

General comments

Subject category Comment text
Deposit Model Name = Epithermal gold vein
Deposit Other Comments = Good candidate for further evaluation as an epithermal gold vein system, rather than as a copper porphyry as was done by Christie (1974).

Reporter information

Type Date Name Affiliation Comment
Reporter 13-MAY-1994 G.D. DuBois U.S. Geological Survey
Reporter 13-MAY-1994 F.H. Wilson U.S. Geological Survey