Commodities
PrimaryLead, Silver
SecondaryCopper, Zinc
Commodity typeM
Deposit
Model72: Polymetallic replacement
Deposit sizeS
WorkingsSurface/Underground
Orebody formTABULAR, PIPE-LIKE
Ore controlFaults, Shear Zone, Bedding Planes
Materials
Ore mineralsCopper, Galena, Lead, Pyrite
GangueActinolite, Chlorite, Kaolin, Limonite
Geology
Host rockLimestone
Associated rockGranite
StructureThrust Fault, Major N-S Fault
AlterationSericitization-Kaolinization
Economic & production
Development statusPast Producer
First production1872
Discovery year1872
Identification
Deposit ID10046051
MRDS IDM233961
Alternate namesSignal, Forest Cave, Atlantic, Index, Snowbank Fraction, Rescue, Windy Point, Long Green, Last Chance, Keystone, Anaconda, Empire.
RegionNA
Data scoreB
Coordinates40.56714, -114.81144
References
SCHRADER, F.C., 1931, SPRUCE MOUNTAIN DISTRICT, ELKO COUNTY, U OF N BULL, VOL. XXV, NO. 7HILL, JAMES M., 1916, NOTES ON SOME MINING DISTRICTS IN EASTERN NEVADA, USGS BULL 648MINES REQUESTER 1937WILSON, C.L., 1937, THE GEOLOGY OF THE BLACK FOREST MINE AREA, SPRUCE MOUNTAIN, NEVADA, THESIS U. OF ARIZONANEVADA BUREAU OF MINES FILES #77