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  3. Alaska Resource Data File (ARDF)

Unnamed (north of Anchor Bay)

Occurrence, Inactive

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Commodities and mineralogy

Main commodities Cu
Other commodities As
Ore minerals pyrite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale SB
Quadrangle map, 1:63,360-scale D-3
Latitude 55.94
Longitude -158.982
Nearby scientific data Find additional scientific data near this location
Location and accuracy 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.

Geologic setting

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).
Geologic map unit (-158.983997636301, 55.9392116004532)
Mineral deposit model Polymetallic veins (Cox and Singer, 1986; model 22c)
Mineral deposit model number 22c
Age of mineralization Eocene or younger.
Alteration of deposit Iron-staining.

Production and reserves

Workings or exploration Rock sample 83AYb509, collected by the U.S. Geological Survey in the mid-1980s, was reported to be anomalous in copper and arsenic (Angeloni and others, 1985; Wilson and others, 1988).
Indication of production None

Additional comments

This site is located on land interim-conveyed to, or patented or selected by, the Bristol Bay Native corporation.

References

MRDS Number 10308223

References

Angeloni, L.M., Wilson, F.H., and Sutley, S.J., 1985, Map and tables showing preliminary rock geochemical data, Port Moller, Stepovak Bay, and Simonof Island quadrangles, Alaska: U.S. Geological Survey Open-File Report 85-470, 179 p., 1 sheet, scale 1:250,000.
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 sheet, scale 1:250,000.
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., 1 plate, scale 1:250,000.
Reporters S.H. Pilcher
Last report date 11/8/2000