California · Napa County
Occurrence
Conn Valley Prospect
Napa County, California, United States
Manganese
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USGS source ↗
Commodities
Tertiary
Manganese
Commodity type
M
Economic & production
Development status
Occurrence
Discovery year
1942
Identification
Deposit ID
10115716
Region
NA
Data score
D
Coordinates
38.48129, -122.38666
References
CALIF BULL 125 1943 P 145FRANCISCAN TYPE DEPOSIT