Mine detail: Lost River-skarn

Previously called ''

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Location

Lat / long:

65.47327, -167.1594

Resource(B)

Primary:	Fluorine-Fluorite, Tungsten, Tin
Ore:	Cassiterite, Chalcopyrite, Fluorite, Scheelite, Sphalerite, Wolframite
Gangue:	Biotite, Garnet, Hornblende, Idocrase, Pyrite, Pyrrhotite, Mica

Production

Operation type:	Unknown
Development status:	Producer

Geology

Associated rock:	Lost River
Alteration processes:	There are several stages and styles of alteration in the Lost River skarn deposit; (1) early anhydrous skarn with abundant garnet and idocrase, (2) hydrous skarn with biotite and hornblende, (3) fluorite-mica veining, (4) mica-matrix breccias, and (5) clay-matrix breccias.

References

DEP	10308413
Reference	{Deposit:: 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.}{Deposit:: Sainsbury, C.L., 1964, Geology of the Lost River mine area, Alaska: U.S. Geological Survey Bulletin 1129, 80 p.}{Deposit:: 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.}{Deposit:: Dobson, D.C., 1982, Geology and alteration of the Lost River tin-tungsten-fluorine deposit, Alaska: Economic Geology, v. 77, p. 1033-1052.}{Deposit:: Hudson, T.L., and Arth, J. G., 1983, Tin-granites of Seward Peninsula, Alaska: Geological Society of America Bulletin, v. 94, p. 768-790.}{Deposit:: 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.}
Reporter	Travis L. Hudson