Black Bear 1-5

Prospect, Inactive

Commodities and mineralogy

Main commodities Au
Ore minerals gold

Geographic location

Quadrangle map, 1:250,000-scale HE
Quadrangle map, 1:63,360-scale B-6
Latitude 63.26
Longitude -149.6
Nearby scientific data Find additional scientific data near this location
Location and accuracy The Black Bear placer gold prospect is on an unnamed, south-flowing tributary to the West Fork Chulitna River, about 1.5 miles upstream from the junction of Colorado Creek. The map site is in the NW1/4 of sec. 23, T. 19 S., R. 11 W., of the Fairbanks Meridian. This is location E-5 of Balen (1990: OFR 34-90).

Geologic setting

Geologic description

The drainage area around the Black Bear gold placer prospect contains porphyry, skarn, and polymetallic and epithermal vein deposits, all having significant gold content. Three placer samples contained good gold values; the richest assayed 0.7 ounce of gold per ton (Balen, 1990: OFR 34-90).
Geologic map unit (-149.602292191302, 63.2595277720487)
Mineral deposit model Placer Au (Cox and Singer, 1986; model 39a)
Mineral deposit model number 39a
Age of mineralization Quaternary.

Production and reserves

Workings or exploration Surface workings only.
Indication of production None