Bear claims

Prospect, Inactive

Commodities and mineralogy

Main commodities Au
Ore minerals gold

Geographic location

Quadrangle map, 1:250,000-scale CI
Quadrangle map, 1:63,360-scale C-3
Latitude 65.525
Longitude -145.264
Nearby scientific data Find additional scientific data near this location
Location and accuracy The Bear claims are located along the Steese Highway centered at about BM 2283, just north of Miller Creek and approximately 1 mile west of Miller House.

Geologic setting

Geologic description

The following geologic description is taken from Freeman and others (1988, p. 16): Mineralization in the roadcut of the Steese Highway within the Bear claims consists of massive to disseminated arsenopyrite and lesser pyrite. The sulfide minerals are hosted by a sequence of chloritic greenschist overlain by black calcareous, graphitic schist overlain by micaceous quartzite. The sequence is folded into open folds whose axes plunge gently south with wavelengths of approximately 150 feet and amplitudes of approximately 30 feet. The crests of anticlines are cut by stockwork quartz veins stained by abundant scorodite. The rocks are pervasively oxidized along vertical shear zones which strike N 40 E. The shears contain oblong fragments of highly altered granite which are also mineralized with arsenopyrite and pyrite and are heavily stained with scorodite. A sixty-five foot section of one of the most highly mineralized anticlinal structures was channel sampled at five foot intervals. The maximum gold value for these channel samples is 0.092 ounces per ton, but several others have gold values ranging from 0.012 to 0.017 ounces per ton.
Geologic map unit (-145.26646177489, 65.5246283519586)
Mineral deposit model Gold-bearing stockwork veins that contain arsenopyrite.
Alteration of deposit Chloritic alteration accompanied by massive to disseminated arsenopyrite and lesser pyrite.

Production and reserves

Workings or exploration Channel sampled in 1988 (Freeman and others, 1988).
Indication of production Undetermined

References

MRDS Number 10307348

References

Freeman, C.J., Adams, D.D., Balla, J.C., and Metz, P.A., 1988, Circle joint venture 1988 final report: Fairbanks, Alaska, Fairbanks Exploration Inc., 23 p.
Reporters C.J. Freeman, J.R. Guidetti Schaefer, A.S. Clements (Avalon Development Corporation)
Last report date 9/14/1998