Mine detail: Jumper

Previously called 'Jumper & Bear'

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Location

Lat / long: 37.55826, -120.1471

Resource(M)

Primary: Gold
Secondary: Silver, Copper
Ore: Gold
Gangue: Quartz
Discovery year: 1855

Production

Operation type: Unknown
Production size: Small
Development status: Past Producer
Production years: 1850 - 1917 - 1937 , 1919 - 1922 , 1925 - 1928 , 1948 .

Geology

References

MRDSM009582
DEP10102882
Reference{Deposit:: 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 .}{Deposit:: LAIZURE, C. MCK., 1928 , SAN FRANCISCO FIELD DIVISION IN TWENTY-FOURTH REPORT OF THE STATE MINERALOGIST: CALIFORNIA STATE MINING BUREAU. P. 91 .}{Deposit:: ERIC, J. C., 1948 , TABULATION OF COPPER DEPOSITS OF CALIFORNIA IN COPPER IN CALIFORNIA: CALIFORNIA DIVISION OF MINES BULLETIN 144 P. 268 .}{Production:: BOWEN & GRAY 1957}
ReporterBowman, J. And Albers, J., Gere, W.