Commodities
PrimaryGold
SecondarySilver, Copper
Commodity typeM
Deposit
Deposit sizeS
WorkingsSurface/Underground
Materials
Ore mineralsGold
GangueQuartz
Economic & production
Development statusPast Producer
Production years1850 - 1917 - 1937 , 1919 - 1922 , 1925 - 1928 , 1948 .
Discovery year1855
Identification
Deposit ID10102882
MRDS IDM009582
Alternate namesJumper & Bear
RegionNA
Data scoreC
Coordinates37.55826, -120.1471
References
BOWEN, O. E., JR., GRAY, C. H., JR., 1957 , MINES AND MINERAL DEPOSITS OF MARIPOSA COUNTY, CALIFORNIA: CALIF. JOUR. MINES AND GEOLOGY, V. 53 , NOS. 1 AND 2 , P. 114 - 5 .LAIZURE, C. MCK., 1928 , SAN FRANCISCO FIELD DIVISION IN TWENTY-FOURTH REPORT OF THE STATE MINERALOGIST: CALIFORNIA STATE MINING BUREAU. P. 91 .ERIC, J. C., 1948 , TABULATION OF COPPER DEPOSITS OF CALIFORNIA IN COPPER IN CALIFORNIA: CALIFORNIA DIVISION OF MINES BULLETIN 144 P. 268 .BOWEN & GRAY 1957