Empire

Prospect in Alaska, United States with commodities Silver, Gold

Geologic information

Identification information

Deposit ID 10308689
Record type Site
Current site name Empire

Geographic coordinates

Geographic coordinates: -160.57041, 55.18723 (WGS84)
Relative position The Empire prospect is located on Unga Island approximately 4,000 feet southwest of the lower adit portal of the Apollo mine (PM079) (Wilson and others, 1988, locality 33). The location is accurate to within 2,500 feet.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Silver Primary
Gold Primary

Materials information

Materials Type of material
Quartz Gangue

Alteration

  • The alteration consists of silicification of andesite.

Nearby scientific data

(1) -160.57041, 55.18723

Comments on the geologic information

  • Geologic Description = The Empire prospect is described as vuggy quartz veins, less than 0.5 inch wide, cutting iron-oxide-stained, silicified andesite (Wilson and others, 1988). The andesite is part of the late Eocene to early Oligocene Popof volcanic rocks (Wilson and others, 1995). By analogy with other deposits in the area, the veins presumably contain small amounts of gold or silver.
  • Age = Eocene or younger.

Economic information

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic

Comments on exploration

  • Status = Inactive

Mining district

District name Alaska Peninsula

Comments on the workings information

  • Workings / Exploration = A 150-foot, south-trending adit is present on the prospect. In 1983 UNC Teton Exploration Drilling Company drilled three core holes for a total of 4,737 feet, conducted VLF and EM surveys, and trenched the prospect.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Alaska Resource Data File ARDF PM080

Bibliographic references

  • Deposit

    Webber, B.S., Moss, J.M., Rutledge, F.A., and Sanford, R.S., 1946, Reconnaissance examinations of parts of the Alaska Peninsula and Aleutian Islands southwestern Alaska: U.S. Bureau of Mines, unpublished report of investigations, 40 p. (Unpublished report held by the U.S. Geological Survey, Anchorage.)

  • Deposit

    Wilson, F.H., White, W.H., and DuBois, G.D., 1988, Brief descriptions of mines, prospects, and mineral occurrences in the Port Moller and Stepovak Bay quadrangles, Alaska Peninsula: U.S. Geological Survey Open-File Report 88-666, 128 p., scale 1:250,000.

  • Deposit

    Wilson, F.H., Detterman, R.L., Miller, J. W., and Case, J.E., 1995, Geologic map of the Port Moller, Stepovak Bay, and Simeonof Island quadrangles, Alaska: U.S. Geological Survey Miscellaneous Investigation Series Map I-2272, 1 map sheet, scale 1:250,000.

Comments on the references

  • Primary Reference = Wilson and others, 1988

General comments

Subject category Comment text
Deposit Model Name = Epithermal gold veins

Reporter information

Type Date Name Affiliation Comment
Reporter 12-JAN-2001 S.H. Pilcher U.S. Geological Survey