Alaska
Prospect

Ear Mountain

Alaska, United States
ZincTinCopperSilverGold
⌖ Show on mapUSGS source ↗
Commodities
PrimaryZinc, Tin, Copper, Silver
SecondaryGold
Commodity typeM
Deposit
Model43: Sn skarn
Materials
Ore mineralsCassiterite, Chalcopyrite, Sphalerite
GangueArsenopyrite, Axinite, Fluorite, Pyrite, Pyrrhotite, Quartz, Sericite, Tourmaline, Zinnwaldite
Geology
Associated rockEar Mountain
AlterationAlteration includes: skarn and hornfels development in country rocks; quartz-tourmaline-fluorite-white mica veining and replacement of granite; and sulfide-bearing replacement of country rocks with or without quartz, fluorite, and boron-bearing silicates.
Economic & production
Development statusProspect
Identification
Deposit ID10308736
Alternate namesWinfield shaft, North Hill
RegionNA
Data scoreB
Coordinates65.9443, -166.20946
References
Knopf, Adolph, 1908, Geology of the Seward Peninsula tin deposits, Alaska: U.S. Geological Survey Bulletin 358, 71 p.Mulligan, J.J., 1959, Tin placer and lode investigations, Ear Mountain area, Seward Peninsula, Alaska: U.S. Bureau of Mines Report of Investigations 5493, 53 p.Sainsbury, C.L., 1972, Geologic map of the Teller quadrangle, Seward Peninsula, Alaska: U.S. Geological Survey Map I-685, 4 p., 1 sheet, scale 1:250,000.Cobb, E.H., and Sainsbury, C.L., 1972, Metallic mineral resource map of the Teller quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-426, 1 sheet, scale 1:250,000.Cobb, E.H., 1975, Tungsten occurrences in Alaska: U.S. Geological Survey Mineral Investigations Resource Map MR-66, 1 sheet, scale 1:250,000.Hudson, T.L., and Arth, J. G., 1983, Tin-granites of Seward Peninsula, Alaska: Geological Society of America Bulletin, v. 94, p. 768-790.Bond, J.F., 1982, Geology of the tin granite and associated skarn at Ear Mountain, Seward Peninsula, Alaska: University of Alaska, Fairbanks, M.Sc. thesis, 141 p.Cobb, E.H., 1975, Summary of references to mineral occurrences (other than mineral fuels and construction materials) in the Teller quadrangle, Alaska: U.S. Geological Survey Open-File Report 75-587, 130 p.Hudson, T.L., 1983, Interim report on the Ear Mountain tin system: Anchorage, Alaska, Anaconda Minerals Company internal report (Report held by Cook Inlet Region, Inc., Anchorage, Alaska).