Unnamed (north of Anchor Bay)

Occurrence in Alaska, United States with commodities Copper, Arsenic

Geologic information

Identification information

Deposit ID 10308223
Record type Site
Current site name Unnamed (north of Anchor Bay)

Geographic coordinates

Geographic coordinates: -158.98444, 55.93927 (WGS84)
Relative position This occurrence is on the Alaska Peninsula approximately 2,500 feet north of Anchor Bay. It is referred to as SBRGX-45 in Wilson and others (1988, locality 19). The map site is at an elevation of about 500 feet, 0.17 mile southeast of the top of hill 1040. 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
Arsenic Secondary

Materials information

Materials Type of material
Pyrite Ore
Quartz Gangue

Alteration

  • (Local) Iron-staining.

Mineral occurrence model information

Model code 85
USGS model code 22c
Deposit model name Polymetallic veins
Mark3 model number 46

Nearby scientific data

(1) -158.98444, 55.93927

Comments on the geologic information

  • Geologic Description = This occurrence is hosted by volcanic units of the Eocene to Oligocene Meshik Formation (Wilson and others, 1995). It consists of fractured and iron-stained volcanic flows cut by pyrite-bearing, vuggy quartz veins (Wilson and others, 1988). One sample collected by the U.S. Geological Survey is reported to contain anomalous values in arsenic and copper (Angeloni and others, 1985; Wilson and others, 1988).
  • Age = Eocene or younger.

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 sample 83AYb509, collected by the U.S. Geological Survey in the mid-1980's, was reported to be anomalous in copper and arsenic (Angeloni and others, 1985; Wilson and others, 1988).

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Alaska Resource Data File ARDF SB019

Bibliographic references

  • Deposit

    Angeloni, L.M., Wilson, F.H., and Sutlet, S., 1985, Map and tables showing preliminary rock geochemical data, Port Moller, Stepovak Bay, and Simeonof Island quadrangles, Alaska: U.S. Geological Survey Open-File Report 85-470, 179 p., 1 map sheet, 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 Model Name = Polymetallic veins (Cox and Singer, 1986; model 22c)
Deposit Other Comments = This site is located on land interim-conveyed to, or patented or selected by, the Bristol Bay Native corporation.

Reporter information

Type Date Name Affiliation Comment
Reporter 08-NOV-00 S.H. Pilcher U.S. Geological Survey