|Quadrangle map, 1:250,000-scale||LG|
|Quadrangle map, 1:63,360-scale||A-1|
|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 descriptionGold 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.|
|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).|
Chapman, R.M., and Foster, R.L., 1969, Lode mines and prospects in the Fairbanks district, Alaska: U.S. Geological Survey Professional Paper 625-D, 25 p., 1 plate.
Cobb, E.H., 1972, Metallic mineral resources map of the Livengood quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-413, 2 sheets, scale 1:250,000.
Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Livengood quadrangle, Alaska: U.S. Geological Survey Open-File Report 76-819, 241 p.
Freeman, C.J., 1992, 1991 Golden Summit project final report, volume 2: Historical summary of lode mines and prospects in the Golden Summit project area, Alaska: Avalon Development Corp., 159 p. (Report held by Freegold Recovery Inc. USA, Vancouver, British Columbia.)
Killeen, P.L., and Mertie, J.B., 1951, Antimony ore in the Fairbanks District, Alaska: U.S. Geological Survey Open-File Report 51-46, 43 p.
Smith, P.S., 1913, Lode mining near Fairbanks, in Prindle, L.M., A geologic reconnaissance of the Fairbanks quadrangle, Alaska: U.S. Geological Survey Bulletin 525, p. 153-216.
Times Publishing Company, 1912, Tanana Magazine, Quartz Edition: Fairbanks, Alaska, Times Publishing Company, 76 p.
|Reporters||C.J. Freeman, J.R. Guidetti Schaefer (Avalon Development Corporation)|
|Last report date||5/4/1999|