Commodities
PrimaryGold
SecondaryCopper, Silver, Lead
Commodity typeM
Deposit
Deposit sizeS
WorkingsUnderground
Materials
Ore mineralsGalena, Gold, Pyrite
GangueCalcite, Quartz
Geology
Host rockSlate · Calaveras Complex;Calaveras Complex
Economic & production
Development statusPast Producer
Identification
Deposit ID10101252
MRDS IDC011236
Alternate namesConfidence, Wm. Penn
RegionNA
Data scoreB
Coordinates39.21989, -121.05271
References
LOGAN, C. A., 1941 , MINERAL RESOURCES OF NEVADA COUNTY: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, V. 37 , NO. 3 , PL. 3 , P. 390 - 391 .MACBOYLE, E., 1919 , MINES AND MINERAL RESOURCES OF NEVADA COUNTY: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, V. 16 , P.IRELAND, W., JR., 1888 , REPORT OF THE STATE MINERALOGIST: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, VOL. 8 , P. 429 - 430 .JOHNSTON, W. D., 1940 , THE GOLD QUARTZ VEINS OF GRASS VALLEY, CALIFORNIA: US GEOLOGICAL SURVEY PROFESSIONAL PAPER 194 , P. 24 , 93 .