Quemboe Bros. Prospect, Fairbanks Mining District, Fairbanks North Star Borough, Alaska, USAi

Regional Level Types
Quemboe Bros. Prospect	Prospect
Fairbanks Mining District	Mining District
Fairbanks North Star Borough	Borough
Alaska	State
USA	Country

Location: Cobb (1972, MF-413), loc. 44; SE1/4 sec. 20, T. 3 N., R. 2 E., of the Fairbanks Meridian. The prospect is on the ridge between Chatham Creek and Wolf Creek, at an elevation of 2,125 feet. Accuracy is within 1,000 feet.
Geology: Gold occurs in a shear zone oriented N 70 W, dipping 50 S; it is composed of quartz stringers in a soft schist (Times Publishing Company, 1912; Brooks, 1916; B 649). The dip of the shear flattens with depth and early quartz is cemented by later stibnite, pyrite and arsenopyrite (Smith, 1913; B 525, p. 171). The hanging wall contact is a fault plane in the Quemboe shaft. Samples collected by the owners in 1912 assayed $22.50 to $32 of gold per ton, or about 1 to 1.5 ounces of gold per ton (Smith, 1913; B 525). An unspecified quantity of ore which was custom milled in Fairbanks averaged $35 of gold per ton (1.7 ounces of gold per ton) (Times Publishing Company, 1912). The prospect was examined in 1942 as a possible source of antimony, however, the low grade and restricted distribution of antimony did not warrant additional exploration (Killeen and Mertie, 1951). No other published or private references to the Quemboe prospect are known.
Workings: In 1913, the development work consisted of a 60 foot shaft with a short drift to the east and another to the west (Smith, 1913; B 525, p. 171).
Production: An unspecified quantity of ore which was custom milled in Fairbanks averaged $35 per ton in gold (1.7 ounces of gold per ton) (Times Publishing Company, 1912).

Commodities (Major) - Au; (Minor) - Sb
Development Status: Yes; small
Deposit Model: Gold-quartz vein.

Other Databases

Link to USGS - Alaska:	LG144

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References