Mine detail: Greisen (on Tin Creek)

Previously called ''

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Location

Lat / long:

65.46527, -167.1244

Resource(M)

Primary:	Tin
Ore:	Cassiterite
Gangue:	Fluorite, Quartz, Topaz, Tourmaline, Mica

Production

Operation type:	Unknown
Development status:	Prospect

Geology

Alteration processes:

Typical greisen alteration with feldspar destruction and extensive replacement by quartz, topaz, and white mica in the host granite. Some quartz veining may be present in the cores of greisen zones. Tourmaline and fluorite are also present in altered rocks. Alteration selvages are less completely greisenized granite.

References

DEP	10308407
Reference	{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:: Hudson, T.L., and Arth, J. G., 1983, Tin-granites of Seward Peninsula, Alaska: Geological Society of America Bulletin, v. 94, p. 768-790.}
Reporter	Travis L. Hudson