Mine detail: Hidden Creek: Grable and Blackburn Mine

Previously called ''

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Location

Lat / long:

63.21448, -154.74988

Resource(M)

Primary:	Gold, Silver
Ore:	Bismuth, Cassiterite, Gold, Scheelite, Thorianite
Gangue:	Hematite, Ilmenite, Magnetite, Zircon

Production

Operation type:	Unknown
Development status:	Past Producer

Geology

Host type:	Monzonite,Slate
Alteration processes:	Sericite and tourmaline., Auriferous gravels partially cemented with ferricrete, due to ground water oxidation.

References

MRDS	A012430
DEP	10001655
Reference	{Deposit:: Brown, J.S., 1926, The Nixon Fork country: U.S. Geological Survey Bulletin 783. p. 97-144.}{Deposit:: Smith, P.S., 1926, Mineral industry of Alaska in 1924: U.S. Geological Survey Bulletin 783-A, p. 1-39.}{Deposit:: Smith, P.S., 1930, Mineral industry of Alaska in 1927: U.S. Geological Survey Bulletin 810-A, p. 1-64.}{Deposit:: Smith, P.S., 1930, Mineral industry of Alaska in 1928: U.S. Geological Survey Bulletin 813, p. 1-72.}{Deposit:: Mertie, J.B., Jr., 1936, Mineral deposits of the Ruby-Kuskokwim region, Alaska: U.S. Geological Survey Bulletin 864-C, 115-245.}{Deposit:: Cobb, E.H., 1974, Synopsis of mineral resources and geology of Alaska: U.S. Geological Survey Bulletin 1307, 53 pages.}
Reporter	Bundtzen, T.K.