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PMRGX-2

Occurrence, Inactive

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Commodities and mineralogy

Main commodities Cu; Pb
Other commodities As; Sb
Ore minerals pyrite
Gangue minerals dolomite; quartz

Geographic location

Quadrangle map, 1:250,000-scale PM
Quadrangle map, 1:63,360-scale A-2
Latitude 55.199
Longitude -160.492
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is located on the coast of Unga Island between Baralof Bay and Delarof Harbor. It is referred to as PMRGX-2 in Wilson and others (1988, locality 52). The map site is 1.5 miles west-northwest of Kelly Rock. The location is accurate to within 1,200 feet.

Geologic setting

Geologic description

This occurrence consists of a pyrite-rich dolomitic vein that cuts sheared volcaniclastic rocks of the late Eocene to early Oligocene Popof volcanic rocks (Wilson and others, 1995). Samples of the vein and of nearby rhyolite were reported to be marginally anomalous in copper, lead, arsenic, and antimony (Wilson and others, 1988).
Geologic map unit (-160.494012856233, 55.198174953703)
Mineral deposit model Polymetallic vein (Cox and Singer, 1986; model 22c)
Mineral deposit model number 22c

Production and reserves

Workings or exploration Samples 85AWs 294-296 and 82ADt collected by the U.S. Geological Survey in the mid-1980s were reported to be marginally anomalous in copper, lead, arsenic, and antimony (Wilson and others, 1988).
Indication of production None

Additional comments

This site is located on land patented by, or interim-conveyed to, the Aleut Corporation.

References

MRDS Number 10308144

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., 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.
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 1/20/2001