Commodities
PrimaryGold, Silver
SecondaryTungsten, Tin, Bismuth, Thorium
Commodity typeM
Deposit
Model77: Sn-polymetallic vein
Materials
Ore mineralsBismuth, Cassiterite, Gold, Scheelite, Thorianite
GangueHematite, Ilmenite, Magnetite, Zircon
Geology
Host rockMonzonite,Slate
AlterationSericite and tourmaline., Auriferous gravels partially cemented with ferricrete, due to ground water oxidation.
Economic & production
Development statusPast Producer
Identification
Deposit ID10001655
MRDS IDA012430
RegionNA
Data scoreB
Coordinates63.21448, -154.74988
References
Brown, J.S., 1926, The Nixon Fork country: U.S. Geological Survey Bulletin 783. p. 97-144.Smith, P.S., 1926, Mineral industry of Alaska in 1924: U.S. Geological Survey Bulletin 783-A, p. 1-39.Smith, P.S., 1930, Mineral industry of Alaska in 1927: U.S. Geological Survey Bulletin 810-A, p. 1-64.Smith, P.S., 1930, Mineral industry of Alaska in 1928: U.S. Geological Survey Bulletin 813, p. 1-72.Mertie, J.B., Jr., 1936, Mineral deposits of the Ruby-Kuskokwim region, Alaska: U.S. Geological Survey Bulletin 864-C, 115-245.Cobb, E.H., 1974, Synopsis of mineral resources and geology of Alaska: U.S. Geological Survey Bulletin 1307, 53 pages.Smith, P.S., 1930, Mineral industry of Alaska in 1928: U.S. Geological Survey Bulletin 813-A, p. 1-72.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.