Alaska
Producer

Lost River-Cassiterite dike exogreisen

Alaska, United States
TungstenTin
⌖ Show on mapUSGS source ↗
Commodities
PrimaryTungsten, Tin
Deposit
Model47: Sn veins49: Sn greisen
Materials
Ore mineralsCassiterite, Chalcopyrite, Galena, Sphalerite, Stannite, Wolframite
GangueArsenopyrite, Fluorite, Kaolinite, Topaz, Tourmaline, Pyrite, Mica, Quartz
Geology
Associated rockLost River
AlterationGreisen has extensively replaced the felsic Cassiterite dike over 2,200 feet of strike and several hundred feet of dip. Later kaolinite replacement has overprinted much of the greisen.
Economic & production
Development statusProducer
Identification
Deposit ID10308412
RegionNA
Data scoreB
Coordinates65.47527, -167.1564
References
Lorain, S.H., Wells, R.R., Mihelich, Miro, Mulligan, J.J., Thorne, R.L., and Herdlick, J.A., 1958, Lode-tin mining at Lost River, Seward Peninsula, Alaska: U.S. Bureau of Mines Information Circular 7871, 76 p.Sainsbury, C.L., 1964, Geology of the Lost River mine area, Alaska: U.S. Geological Survey Bulletin 1129, 80 p.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.Hudson, T.L., and Arth, J. G., 1983, Tin-granites of Seward Peninsula, Alaska: Geological Society of America Bulletin, v. 94, p. 768-790.Hudson, T.L., and Reed, B.L., 1997, Tin deposits of Alaska, in Goldfarb, R.J., and Miller, L.D., eds., Mineral Deposits of Alaska: Economic Geology Monograph 9, p. 450-465.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.