Unnamed Occurrence (ARDF - MG019; on west bank of Cheeneetnuk River), McGrath District, Yukon-Koyukuk Borough, Alaska, USA
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Geology: This occurrence is a highly anomalous stream sediment sample taken at the intersection of an unnamed, second order stream with Cheeneetnuk River. The stream drains a mid-Tertiary granite pluton; its associated, mineralized contact zone may be related to several other occurrences in the area (MG017, MG018, MG020, MG021). The stream sediment sample contained 43.3 grams/tonne silver, 322 ppm copper, and 19 ppm molybdenum (Gilbert, 1981).
Workings: W.G. Gilbert collected the stream sediment sample in 1977 (Gilbert, 1981). The sample contained 43.3 grams/tonne silver, 322 copper, and 19 ppm molybdenum.
Reserves: None.
Commodities (Major) - Ag, Cu; (Minor) - Mo
Development Status: No
Mineral List
No entries listed.
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References
Gilbert, W.G., 1981, Preliminary geologic map and geochemical data, Cheeneetnuk River area, Alaska: Alaska Division of Geological and Geophysical Surveys Open-File Report 153, 12 p., 2 sheets, 1:63,360 scale. Solie, D.N., Bundtzen, T.K., and Gilbert, W.G., 1991, K/Ar ages of igneous rocks in the McGrath quadrangle, Alaska: Alaska Division of Geological and Geophysical Surveys Public Data File 91-23, 7 p., 1 sheet, 1:250,000 scale.