Alaska
Producer

Nixon Fork

Alaska, United States
CopperSilverGoldTungstenUraniumThoriumBismuth
⌖ Show on mapUSGS source ↗
Commodities
PrimaryCopper, Silver, Gold
SecondaryTungsten, Uranium, Thorium, Bismuth
Commodity typeM
Deposit
Model59: Skarn Cu
Materials
Ore mineralsChalcopyrite, Azurite, Bismuth, Bornite, Chalcocite, Chrysocolla, Electrum, Malachite, Scheelite, Gold, Pyrite
GangueCalcite, Chlorite, Epidote, Garnet, Limonite, Quartz, Sericite, Siderite, Zeolite
Geology
Host rockLimestone
Associated rockQuartz Monzonite,Quartz Latite
AlterationOxidation of sulfides probably resulted in some supergene enrichment of gold values
Economic & production
Development statusProducer
Identification
Deposit ID10100969
MRDS IDA012420
Alternate namesMespelt, Crystal, Garnet, High Grade, Mespelt Inclined Shaft, Recreation, Keen, Twin Shafts, Mespelt Main Shaft, Garnet Trench, Parsons and Strand, Southern Cross
RegionNA
Data scoreB
Coordinates63.23837, -154.76684
References
Mertie, J.B., Jr., 1936, Mineral deposits of the Ruby-Kuskokwim region, Alaska: U.S. Geological Survey Bulletin 864-C, 115-245.Williams, J.A., 1961, Report of the Division of Mines and Minerals for the year 1961: Alaska Division of Mines and Minerals Annual Report 1961, 108 p.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.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.Bundtzen, T.K., and Miller, M.L., 1997, Precious metals associated with Late Cretaceous-early Tertiary igneous rocks of southwestern Alaska, in Goldfarb, R.J., and Miller, L.D., eds., Economic Geology Monograph #9, Mineral Deposits of Alaska, p. 242-286.Swainbank, R.C., Bundtzen, T. K., Clough A.H., and Henning, M.W., 1997, Alaska's mineral industry 1996: Alaska Division of Geological and Geophysical Surveys Special Report 51, 68 p.King, H.D., Risoli, D.A., Cooley, E.F., O'Leary, R.M., Speckman, W.A., Speisman, D.L., and Galland, D.W., 1980, Final results and statistical summary of analyses of geochemical samples from the Medfra quadrangle, Alaska: U.S. Geological Survey Open-File Report 80-811F, 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.Bundtzen, T.K., Swainbank, R.C., Clough, A.H., Henning, M.W., and Hansen, E.W., 1994, Alaska's mineral industry, 1993: Alaska Division of Geological and Geophysical Surveys Special Report 48, 84 p.Bundtzen, T.K., Swainbank, R.C., Clough, A.H., Henning, M.W., and Charlie, K.M., 1996, Alaska's mineral industry, 1995: Alaska Division of Geological and Geophysical Surveys Special Report 50, 72 p.