California · Placer County
Past Producer
Gem Mine
Placer County, California, United States
Gold
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USGS source ↗
Commodities
Primary
Gold
Commodity type
M
Deposit
Deposit size
S
Workings
Underground
Materials
Ore minerals
Gold
Gangue
Quartz
Geology
Host rock
Slate
Economic & production
Development status
Past Producer
Identification
Deposit ID
10103119
MRDS ID
M021868
Region
NA
Data score
C
Coordinates
39.16961, -120.71381
References
WARING, CLARENCE A., 1917 , PLACER COUNTY: REPORT 15 OF THE STATE MINERALOGIST, CALIFORNIA STATE MINING BUREAU, P. 339