Commodities
PrimarySilver, Gold
SecondaryTungsten, Copper, Bismuth
Commodity typeM
Materials
Ore mineralsArsenopyrite, Bismuth, Chalcopyrite, Scheelite, Gold, Pyrite
GangueEpidote, Magnetite
Geology
Host rockLimestone
Associated rockQuartz Monzonite,Quartz Latite
AlterationExtensive oxidation of primary sulfides.
Economic & production
Development statusPast Producer
Identification
Deposit ID10000473
MRDS IDA010652
Alternate namesGarnet Extension
RegionNA
Data scoreB
Coordinates63.23837, -154.77684
References
Martin, G.C., 1922, Gold lodes in the Upper Kuskokwim region: U.S. Geological Survey Bulletin 864D, p. 149-161.Mertie, J.B., Jr., 1936, Mineral deposits of the Ruby-Kuskokwim region, Alaska: U.S. Geological Survey Bulletin 864-C, 115-245.Freeman, Larry, 1996, A progress report on the Nixon Fork underground gold mine, McGrath-McKinley district, Alaska [abs]: Abstract preprint of the 15th Biennial Conference on Alaskan Mining, Alaska Miners Association, Fairbanks, Alaska, p. 36.Herreid, G.H., 1966, Geology and geochemistry of the Nixon Fork area, Medfra quadrangle, Alaska: Alaska Division of Mines and Minerals Geologic Report 22, 34 p., 1 sheet, scale 1:40,000.