Glendenning

Prospect, Inactive

Commodities and mineralogy

Main commodities Cu
Other commodities Zn
Ore minerals chalcopyrite; covellite; pyrite; sphalerite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale SR
Quadrangle map, 1:63,360-scale D-1
Latitude 60.9745
Longitude -147.3649
Nearby scientific data Find additional scientific data near this location
Location and accuracy The prospect is located near the head of Cedar Bay in the N1/2 section 8, T. 10 N., R. 12 E., of the Seward Meridian. This is location 184 of Tysdal (1978 [MF-880-A]) and location S-116 of Jansons and others (1984). This location is accurate to within half a mile.

Geologic setting

Geologic description

The prospect is a 6- to 70-foot- wide shear zone in silicified graywacke and Eocene muscovite-bearing granite. The zone contains quartz veins carrying chalcopyrite, covellite, pyrite, and sphalerite (Jansons and others, 1984). The largest vein is 20 centimeters thick and 1 to 1.5 meters long. It contains mostly pyrite along with traces of chalcopyrite and covellite (Tysdal, 1978 [MF-880-A]).
The single working on the prospect is a 700-foot adit. Three grab samples collected by the U.S. Bureau of Mines contained from 30 to 825 ppm copper (Jansons and others, 1984).
Geologic map unit (-147.3669722265, 60.973969000718)
Mineral deposit model Polymetallic veins (Cox and Singer, 1986; model 22c)
Mineral deposit model number 22c
Age of mineralization Eocene or younger; the shear zone cuts Eocene granite.
Alteration of deposit Silicification.

Production and reserves

Workings or exploration The single working on the prospect is a 700-foot-long adit. Three grab samples collected by the U.S. Bureau of Mines contained from 30 to 825 ppm copper (Jansons and others, 1984).
Indication of production None

References