California · Trinity County
Prospect
Broken Hammer Prospects
Trinity County, California, United States
Manganese
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USGS source ↗
Commodities
Tertiary
Manganese
Commodity type
M
Economic & production
Development status
Prospect
Discovery year
1942
Identification
Deposit ID
10141932
MRDS ID
M020311
Alternate names
Helmke Manganese Group
Region
NA
Data score
E
Coordinates
40.12985, -123.48581