Quemboe Bros.

Prospect, Inactive

Commodities and mineralogy

Main commodities Au
Other commodities Sb
Ore minerals arsenopyrite; gold; pyrite; stibnite

Geographic location

Quadrangle map, 1:250,000-scale LG
Quadrangle map, 1:63,360-scale A-1
Latitude 65.074
Longitude -147.389
Nearby scientific data Find additional scientific data near this location
Location and accuracy 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.

Geologic setting

Geologic description

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.
Geologic map unit (-147.391448956693, 65.0735775924502)
Mineral deposit model Gold-quartz vein.

Production and reserves

Workings or exploration 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).
Indication of production Yes; small
Production notes 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).

References

MRDS Number A015446

References

Reporters C.J. Freeman, J.R. Guidetti Schaefer (Avalon Development Corporation)
Last report date 5/4/1999