California · Napa County
Prospect
Powers Mine
Napa County, California, United States
Manganese
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USGS source ↗
Commodities
Tertiary
Manganese
Commodity type
M
Economic & production
Development status
Prospect
Discovery year
1918
Identification
Deposit ID
10236804
Region
NA
Data score
D
Coordinates
38.51239, -122.32996
References
CALIF BULL 125 1943 P 146; BULL 152 1950 P 160-1ASSAYS MANGANESE 17.8% SILICA 66.9%