New Mexico · Sierra County
Producer

Keystone Mine 1880's

Sierra County, New Mexico, United States
SilverCopperLeadGold
⌖ Show on mapUSGS source ↗
Commodities
PrimarySilver
SecondaryCopper, Lead, Gold
Commodity typeM
Deposit
Deposit sizeS
WorkingsUnderground
Orebody formPINCH AND SWELL
Ore controlMineralized Solutions Rose Along Faults And Localized In Fractures.
Materials
Ore mineralsAnglesite, Argentite, Chalcopyrite, Chlorargyrite, Galena, Gold, Malachite
GangueQuartz
Geology
Host rockGranite
StructureMajor Faults Trend North And Minor Faults Trend Northwest To Southwest.
Economic & production
Development statusProducer
First production1885
Last production1936
Discovery year1885
Identification
Deposit ID10011706
MRDS IDD006805
Alternate namesNorth Percha Camp: Patented In 1907 Keystone Claim
RegionNA
Data scoreB
Coordinates32.9765, -107.74421
References
LINDGREN, W., GRATON, L.C. AND GORDON, C.H., 1910 USGS PP 68, P. 268-270HARLEY, G.T., 1934 NMBMMR BULL 10, P. 98-105HEDLUND, D.C., 1977 USGS MAP MF-900-BNMBMMR GENERAL FILE DATA