Unnamed (west of Middle Fork Chandalar River)

Occurrence, Inactive

Commodities and mineralogy

Main commodities Cu
Other commodities Pb
Ore minerals chalcopyrite; galena; pyrite
Gangue minerals quartz

Geographic location

Quadrangle map, 1:250,000-scale PS
Quadrangle map, 1:63,360-scale A-2
Latitude 68.12
Longitude -147.99
Nearby scientific data Find additional scientific data near this location
Location and accuracy Site is at an elevation of about 3,500 ft. approximately 7 miles west of the Middle Fork Chandalar River on a northeast- and east-flowing tributary (NE1/4 sec. 28, T. 15 S., R. 18 E., of the Umiat Meridian). Location accurate within 1-mile radius.

Geologic setting

Geologic description

Occurrence is described only as black chert, at the contact between Devonian Skajit Limestone and overlying Beaucoup Formation, that contains a pyrite- and chalcopyrite-bearing quartz vein (Menzie and others, 1985). USBM information from a location thought to correspond to this prospect suggests galena is also present (Barker, 1978). No other descriptive information is available.
Geologic map unit (-147.992780007299, 68.1196399449635)

Production and reserves

Indication of production None

Additional comments

Described as being a stratabound vein in Menzie and others (1985); USGS field station 76ARR408.