Unnamed Occurrence (ARDF - ID017; on hill 3420 north of Ganes Creek), Iditarod District, Yukon-Koyukuk Borough, Alaska, USA
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Geology: This occurrence consists of a stockworks of thin quartz-tourmaline-axinite-sulfide veins in altered volcanic flows adjacent to the 70.9 Ma, Beaver Mountains stock (Bundtzen and Laird, 1982; Miller and Bundtzen, 1994). No size or other information or structural information is available. Grab samples of the mineralization collected by Battle Mountain Mining Company contained up 435 parts per billion (ppb) gold, 185.1 parts per million (ppm) silver, 3,346 ppm copper, 2.54 percent lead, 1.05 percent zinc, more than 2,000 ppm arsenic, 509 ppm antimony, and 94 ppm tin (Szumigala, 1993).
Workings: Surface sampling was conducted by Battle Mountain Mining Company in 1990 (Szumigala, 1993).
Age: Undated; probably related to the nearby Beaver Mountains stock which has been dated as 70.9 Ma (Miller and Bundtzen, 1994).
Commodities (Major) - Ag, Au, Cu, Pb, Zn; (Minor) - As, Sb, Sn
Development Status: None
Deposit Model: Polymetallic vein? (Cox and Singer, 1986; model 22c).
3 entries listed. 1 valid mineral.
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Bundtzen, T.K., and Laird, G.M., 1982, Geologic map of the Iditarod D-2 and eastern D-3 quadrangles, Alaska: Alaska Division of Geological and Geophysical Surveys Geologic Report 72, 1 sheet, scale 1:63,360. 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. Szumigala, D.J., 1993, Gold mineralization related to Cretaceous-Tertiary magmatism in the Kuskokwim Mountains of west-central and southwestern Alaska: Los Angeles, University of California Ph.D. dissertation, 300 p.