Unnamed Prospect (ARDF - ID079; south of head of St. Patricks Creek), Iditarod District, Yukon-Koyukuk Borough, Alaska, USA
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Geology: The rocks in the vicinity of this placer occurrence are iron-stained, mafic volcanic rocks of the Beaver Mountains volcanic field (Bundtzen, Laird, and Lockwood, 1988; Miller and Bundtzen, 1994; Miller, Bundtzen, and Gray, 2005). The volcanic rocks contain thin quartz veins in joints and shear zones. Small amounts of placer gold were recovered from stream gravels here prior to 1970. No other information is available.
Workings: A small amount of placer gold was recovered during prospecting, probably before 1970 (Don Harris, oral communication, 1982).
Age: Probably Quaternary.
Production: A small amount of placer gold was recovered in a test pit before 1970 (Don Harris, oral communication, 1982).
Commodities (Major) - Au
Development Status: Yes; small
Deposit Model: Placer Au deposit (Cox and Singer, 1986; model 39a).
Mineral List
1 entry listed. 1 valid mineral.
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References
Bundtzen, T.K., Laird, G.M., and Lockwood, M.S., 1988, Geologic map of the Iditarod C-3 quadrangle, Alaska: Alaska Division of Geological and Geophysical Surveys Professional Report 96, 13 p., 1 sheet, scale 1:63,360. McGimsey, R.G., Miller, M.L., and Arbogast, B.F., 1988, Paper version of analytical results, and sample locality map for rock samples from the Iditarod quadrangle, Alaska: U.S. Geological Survey Open-File Report 88-421-A, 110 p., 1 sheet, scale 1:250,000. Miller, M.L., and Bundtzen, T.K., 1994, Generalized geologic map of the Iditarod quadrangle, Alaska showing potassium-argon, major oxide, trace element, fossil, paleocurrent, and archeological sample localities: U.S. Geological Survey Miscellaneous Field Studies Map MF-2219-A, 48 pages; 1 sheet, scale 1:250,000. Miller, M.L., Bundtzen, T.K., and Gray, J.E., 2005, Mineral resource assessment of the Iditarod quadrangle, west-central Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-2219-B, scale 1:250,000, pamphlet.