|Quadrangle map, 1:250,000-scale||CA|
|Quadrangle map, 1:63,360-scale||D-5|
|Nearby scientific data||Find additional scientific data near this location|
|Location and accuracy||The Koopuk Creek placer mine is located in the headwaters of Koopuk Creek. The map site is at the boundary of sections 29 and 32, T. 7 N., R. 11 W., of the Kateel River Meridian. Cobb, 1972 (MF-389), location 47.|
Geologic descriptionGold was reported to have been mined from a stream placer deposit in Koopuk (Koobuk) Creek in the 1920s. The drainage area of Koopuk Creek is underlain by Cenozoic lava flows.
|Geologic map unit||(-160.962698023039, 65.9693418094564)|
|Mineral deposit model||Placer Au-PGE (Cox and Singer, 1986; model 39a).|
|Mineral deposit model number||39a|
|Age of mineralization||Quaternary.|
|Workings or exploration||Gold was reported to have been mined from a stream placer deposit in Koopuk (Koobuk) Creek in the 1920s.|
|Indication of production||Yes; small|
Additional commentsStream gradient 50 to 75 feet per mile.
Brooks, A.H., 1925, Alaska's mineral resources and production, 1923: U.S. Geological Survey Bulletin 773-A, p. 3-52.
Cobb, E.H., 1972, Metallic mineral resources map of the Candle Quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-389, 1 sheet, scale 1:250,000.
Cobb, E.H., 1976, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Candle, Holy Cross, Norton Bay, Nulato, and Unalakleet quadrangles, Alaska: U.S. Geological Survey Open-File Report 76-866, 102 p.
Moffit, F.H., 1927, Mineral industry in Alaska in 1925: U.S. Geological Survey Bulletin 792-A, p. 1-39.
Smith, P.S., 1926, Mineral industry of Alaska in 1924: U.S. Geological Survey Bulletin 783-A, p. 1-30.
|Reporters||Anita Williams (Anchorage, AK)|
|Last report date||1/12/2000|