Pmrgx-25

Occurrence in Alaska, United States with commodities Copper, Zinc, Arsenic, Barium-Barite

Geologic information

Identification information

Deposit ID 10308095
Record type Site
Current site name Pmrgx-25

Geographic coordinates

Geographic coordinates: -160.87944, 55.58523 (WGS84)
Relative position The map site of this occurrence is at an elevation of 1,800 feet, about 2.0 miles east of Beaver River and 3.1 miles north of Beaver Bay. It is referred to as PMRGX-25 by Wilson and others (1988, locality 73). The location is accurate to within 2,500 feet.
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Geographic areas

Country State
United States Alaska

Commodities

Commodity Importance
Copper Primary
Zinc Primary
Arsenic Secondary
Barium-Barite Secondary

Materials information

Materials Type of material
Pyrite Ore
Quartz Gangue

Nearby scientific data

(1) -160.87944, 55.58523

Comments on the geologic information

  • Geologic Description = At this site a dark shale member of the Upper Cretaceous Hoodoo Formation is cut by quartz veinlets and by an andesite sill containing disseminated pyrite (Wilson and others, 1988; 1995). The occurrence is on the periphery of a diorite(?) plug or sill that crops out to the east. Four samples collected by the U.S. Geological Survey in the mid-1980's were reported to be anomalous in arsenic, barium, copper, and zinc (Wilson and others, 1988).

Economic information

Economic information about the deposit and operations

Development status Occurrence

Comments on exploration

  • Status = Inactive

Mining district

District name Alaska Peninsula

Comments on the workings information

  • Workings / Exploration = Rock samples 85AYB719-720 and 85AWS303 and 305, collected by the U.S. Geological Survey in the mid-1980s, were reported to be anomalous in arsenic, barium, copper, and zinc (Wilson and others, 1988).

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Alaska Resource Data File ARDF PM017

Bibliographic references

  • Deposit

    Wilson, F.H., Harris, E.E., and Bailey, E.A., 1987, Preliminary analytical results and sample locality map for rock samples collected in 1985 and 1986, Port Moller and Stepovak Bay quadrangles, Alaska: U.S. Geological Survey Open-File Report 87-497, 44 p., 1 plate, scale 1:250,000.

  • 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 Other Comments = This site is on land selected by the Aleut Corporation.

Reporter information

Type Date Name Affiliation Comment
Reporter 25-JAN-01 S.H. Pilcher U.S. Geological Survey