Unnamed (east of south tributary of Fog Creek)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Cu
Other commodities As; Bi; Zn

Geographic location

Quadrangle map, 1:250,000-scale TK
Quadrangle map, 1:63,360-scale C-4
Latitude 62.6726
Longitude -148.5637
Nearby scientific data Find additional scientific data near this location
Location and accuracy This occurrence is at an elevation of about 3,100 feet on the east, valley wall of a south tributary of Fog Creek. It is approximately 1.2 miles southwest of the top of hill 4960, near the center of the SW1/4 sec. 20, T. 30 N., R. 5 E., Seward Meridian. The location is accurate to within 1/4 mile.

Geologic setting

Geologic description

This occurrence consists of a copper-stained, 30-cm-thick section of silicified gossan in Paleozoic sedimentary rocks (J. Schmidt, written communication, 2001). A U.S. Geological Survey rock sample contains 4.69 percent copper, 123 parts per million bismuth, 353 parts per million zinc, and 74 parts per million arsenic.
Geologic map unit (-148.565934364009, 62.6721249286467)
Alteration of deposit Gossan is silicified and copper-stained.

Production and reserves

Workings or exploration Only surface sampling by U.S. Geological Survey (J. Schmidt, written communication, 2001).
Indication of production None