Commodities
PrimaryGold, Silver, Copper
SecondaryZinc, Lead
Commodity typeM
Deposit
Deposit sizeS
WorkingsUnderground
Orebody formPINCH AND SWELL
Ore controlMineralization Localized In Fissures And Fractures Adjacent To A Monzonite Stock.
Materials
Ore mineralsArgentite, Chalcopyrite, Galena, Gold, Sphalerite
GangueBarite, Calcite, Pyrite, Quartz, Rhodochrosite
Geology
Host rockDiorite,Andesite
Associated rockMonzonite,Diorite,Andesite
AlterationPropylitization, Sericitization
Economic & production
Development statusPast Producer
First production1865
Last production1955
Discovery year1860
Identification
Deposit ID10013471
MRDS IDD009780
Alternate namesHearst Shaft, Gillett Shaft, Thayer Shaft: Patented Claims, Pacific, South Extension Pacific, Pacific No. 2,
RegionNA
Data scoreB
Coordinates32.85094, -108.24256
References
LINDGREN, W., GRATON, L. C., AND GORDON, C. H., 1910 USGS PP 68, P. 297-299PAIGE, S., 1911 USGS BULL 470, P. 109-118BUSH, F. V., 1915 MINING AND ENGINEERING WORLD, VOL 42, NO 4, P. 165-168ANDERSON, E. C., 1957 NMBMMR BULL 39, P. 70-71JONES, W. R., MOORE, S. L., AND PRATT, W. P., 1970 USGS GEOLOGIC MAP, GQ-865NMBMMR GENERAL FILE DATA