Bear Creek

Mine, Undetermined

Commodities and mineralogy

Main commodities Au
Other commodities Ag
Ore minerals gold

Geographic location

Quadrangle map, 1:250,000-scale OP
Quadrangle map, 1:63,360-scale C-1
Latitude 63.5699
Longitude -156.1318
Nearby scientific data Find additional scientific data near this location
Location and accuracy Bear Creek is a small, northeast-flowing headwater tributary to Graham Creek. The coordinates are for the approximate midpoint of mining at Bear Creek, on a bench between Bear Creek and Cripple Creek in sec. 22, T. 22 S., R. 14 E., Kateel River Meridian. Bear Creek is locality 7 of Cobb (1972 [MF 367]). The location is accurate within 1/2 mile.

Geologic setting

Geologic description

The Bear Creek area is underlain by chert, argillite, and volcaniclastic rocks. The upper portion of Cripple Creek, a nearby tributary to Graham Creek, is underlain by volcanic graywacke and conglomerate. The headwaters of Cripple Creek drain a small monzonite pluton. The rocks along the lower part of Cripple Creek are chert, argillite, and volcaniclastic strata; in the upper part of the creek, these rocks are in fault contact with structurally overlying volcanic graywacke and conglomerate (Chapman and others, 1985).
Mining along Bear Creek took place on a bench between Cripple and Bear creeks. Placer mining was intermittent from 1922 until 1961, and again from 1970 until at least 1991 (Brooks and Capps, 1924; Smith, 1939 [B 910-A]; Smith, 1942; White and Killeen, 1953; Cobb, 1972 [MF 367]; Cobb, 1973 [OFR 76-576]; Bundtzen and others, 1990; Bundtzen and others, 1992). The average fineness of gold is 901 (Metz and Hawkins, 1981). Production from Bear Creek prior to 1961 was at least 10,412 ounces of gold and 1,150 ounces of silver (Bundtzen and others, 1987).
Geologic map unit (-156.134183153312, 63.569287275914)
Mineral deposit model Placer Au (Cox and Singer, 1986; model 39a)
Mineral deposit model number 39a

Production and reserves

Workings or exploration Placer mining was intermittent from 1922 until 1961, and again from 1970 until at least 1991(Brooks and Capps, 1924; Smith, 1939 [B 910-A]; Smith, 1942; White and Killeen, 1953; Cobb, 1972 [MF 367]; Cobb, 1973 [OFR 76-576]; Bundtzen and others, 1990; Bundtzen and others, 1992).
Indication of production Yes; small
Production notes Production from Bear Creek prior to 1961 was at least 10,412 ounces of gold and 1,150 ounces of silver (Bundtzen and others, 1987).

Additional comments

See also Cripple Creek (OP005).

References

MRDS Number A010750; A015005

References

Metz, P.A., and Hawkins, D.B., 1981, A summary of gold fineness values from Alaska placer deposits: University of Alaska, Fairbanks, Mineral Industry Research Laboratory Report No. 45, 56 p.
Reporters C.E. Cameron
Last report date 8/7/2001