Unnamed (Pt. Bishop)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Ag; Au; Cu; Zn
Ore minerals chalcopyrite; pyrite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale JU
Quadrangle map, 1:63,360-scale A-1
Latitude 58.2028
Longitude -134.1478
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is at Bishop Point on Stephens Passage. It is in the NW1/4 section 28, T. 42 S., R. 69 E. of the Copper River Meridian. The location is accurate.

Geologic setting

Geologic description

The rocks in the general area are Lower Permian to Upper Triassic, volcanic rocks and subordinate clastic and carbonate strata, and their their metamorphosed equivalents (Gehrels and Berg, 1994).
This occurrence is in black phyllite, mafic felsic rocks, and metamorphosed pillow basalt (Redman and others, 1989). The phyllite contains concordant quartz veins up to 3 feet thick that contain 1 to 5 percent pyrite cubes and sparse chalcopyrite. Stratiform pyrite bands up to 2 inches thick locally occur in the metamorphosed pillow basalt. U.S. Bureau of Mines samples of the metabasalt, metafelsic rocks, and phyllite contain up to 0.1 ppm gold, 2.2 ppm silver, 0.27 percent copper and 590 ppm zinc (Redman and others, 1989).
Geologic map unit (-134.149555223004, 58.202472070234)

Production and reserves

Workings or exploration Surface samples only.
Indication of production None



Reporters J.C. Barnett and L.D. Miller (Juneau, Alaska )
Last report date 12/15/2001