Commodities
PrimaryGold
SecondarySilver, Bismuth, Tungsten
Commodity typeM
Deposit
Model121: Shoreline placer Ti
Materials
Ore mineralsBismuth, Scheelite
GangueHematite, Ilmenite, Magnetite, Sphene, Thorianite, Zircon
Geology
AlterationAuriferous gravels partially cemented by ferricrete, probably due to ground water oxidation.
Economic & production
Development statusPast Producer
Identification
Deposit ID10001653
MRDS IDA012427
RegionNA
Data scoreB
Coordinates63.22337, -154.74989
References
Brown, J.S., 1926, The Nixon Fork country: U.S. Geological Survey Bulletin 783. p. 97-144.Mertie, J.B., Jr., 1936, Mineral deposits of the Ruby-Kuskokwim region, Alaska: U.S. Geological Survey Bulletin 864-C, 115-245.Reed, B.L., and Miller, T.P., 1971, Orientation geochemical soil survey at the Nixon Fork Mines, Medfra quadrangle, Alaska: U.S. Geological Survey Bulletin 1312K, p. K1-K21.Cobb, E.H., 1974, Synopsis of mineral resources and geology of Alaska: U.S. Geological Survey Bulletin 1307, 53 pages.Patton, W.W., Jr., Moll, E.J., Dutro, J.T., Jr., Silberman, M.L., and Chapman, R.M., 1980, Preliminary geologic map of Medfra quadrangle, Alaska: U.S. Geological Survey Open-File Report 80-811-A, 1 sheet, scale l:250,000.Fisher, D.G., and Juilliand, J.D., 1986, Mineral deposit types and their characteristics: U.S. Bureau of Land Management Technical Bulletin 3031-1, 134 pages.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.