Mine detail: Alder Gulch - Virginia City Placers

Previously called ''

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Location

Lat / long: 45.32379, -112.00253

Resource(B)

Primary: Gold, Garnet
Ore: Gold, Almandine
Discovery year: 1863

Production

Operation type: Unknown
Deposit type: Placer Au-PGE
Production size: Yes
Development status: Past Producer
First production started: 1863
Last production ended: 1925

Geology

Host type:Alluvium
Associated rock:Aplite And Andesite Porphyry Intrusions;Tobacco Root Batholith;
Associated type:Andesite
Structure:Tobacco Root Batholith, Laramide Folds And Faults
Tectonic:Cordilleran Miogeosyncline

References

MRDSW014672
DEP10105717
Reference{Deposit:: INDUSTRIAL MINERALS, 1994, ... AS COMINCO EVALUATES ALDER GARNET, IN WORLD OF MINERALS: NO. 324, P. 28.}{Deposit:: INDUSTRIAL MINERALS, 1995, COMINCO TO START ALDER GARNET OPERATION, IN WORLD OF MINERALS: NO. 329, P. 15.}{Deposit:: LYDEN, C.J., 1948, THE GOLD PLACERS OF MONTANA: MONTANA BUREAU OF MINES AND GEOLOGY MEMOIR 26, P. 80-83}{Deposit:: WINCHELL, A.N., 1914, MINING DISTRICTS OF THE DILLON QUADRANGLE, MONTANA AND ADJACENT AREAS: U.S GEOLOGICAL SURVEY BULLETIN 574, P. 57}{Reserve-Resource:: INDUSTRIAL MINERALS, 1994.}
ReporterKrohn, Douglas H., Orris, Greta J.