Unnamed (near South Bay on Perry Island)

Prospect, Inactive

Commodities and mineralogy

Main commodities Cu
Gangue minerals epidote

Geographic location

Quadrangle map, 1:250,000-scale SR
Quadrangle map, 1:63,360-scale C-3
Latitude 60.6869
Longitude -147.9227
Nearby scientific data Find additional scientific data near this location
Location and accuracy The prospect is located in the NW1/4 section 20, T. 7 N., R. 9 E., of the Seward Meridian. It is situated on or near the northwest shore of South Bay on the south side of Perry Island. This is location S-99 of Jansons and others (1984). This location is accurate to within a quarter of a mile.

Geologic setting

Geologic description

The prospect consists of a 4- by 8-foot open cut on 2- to 3-inch-wide epidote veins in granite (Jansons and others, 1984). Tysdal and Case (1979) mapped the rocks in this area as Eocene granite and granodiorite. Iron-stained veins have silicified the surrounding wall rock. The U.S. Bureau of Mines collected samples from this prospect that contained as much as 1 ppm copper (Jansons and others, 1984).
Geologic map unit (-147.924768111027, 60.6863507724914)
Age of mineralization Eocene; the prospect is in Eocene granitic rock.
Alteration of deposit Silicification.

Production and reserves

Workings or exploration Workings consist of a 4-foot-wide by 8-foot-long open cut. The date of this work is unknown. Samples collected by the U.S. Bureau of Mines contained as much as 1 ppm copper (Jansons and others, 1984).
Indication of production None

Additional comments

Possible crystal collecting site?