Unnamed (southern Culross Island)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Cu
Ore minerals chalcopyrite; pyrite; pyrrhotite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale SR
Quadrangle map, 1:63,360-scale C-3
Latitude 60.6593
Longitude -148.0967
Nearby scientific data Find additional scientific data near this location
Location and accuracy The occurrence is located in the NW1/4 section 32, T. 7 N., R. 8 E., of the Seward Meridian. It is situated on the southeast shore of Culross Island just south of VABM Still. This is location S-101 of Jansons and others (1984). This location is accurate to within half a mile.

Geologic setting

Geologic description

The occurrence consists of a 20- by 30-foot exposure of quartz diorite containing as much as 10 percent combined pyrite, pyrrhotite, and chalcopyrite that form clots and disseminations (Jansons and others, 1984). Tysdal and Case (1979) mapped this area as Eocene granite and granodiorite. The U.S. Bureau of Mines collected samples from this occurrence that contained as much as 0.13 percent copper (Jansons and others, 1984). No other information is has been made public.
Geologic map unit (-148.098751975916, 60.6586976379632)
Age of mineralization The occurrence is in Eocene granitic rock.

Production and reserves

Workings or exploration Samples collected by the U.S. Bureau of Mines contained up to 0.13 percent copper (Jansons and others, 1984).
Indication of production None

References