California · Trinity County
Past Producer
Double A.Mine
Trinity County, California, United States
Silica
Manganese
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USGS source ↗
Commodities
Tertiary
Silica, Manganese
Commodity type
M
Materials
Other materials
Chert, Pyrolusite, Quartz, Rhodochrosite, Rhodonite
Economic & production
Development status
Past Producer
First production
1944
Discovery year
1942
Identification
Deposit ID
10263508
MRDS ID
M020320
Region
NA
Data score
C
Coordinates
40.20675, -123.27551
References
CAL.DIV.MINES AND GEOLOGY,BULL.152,1950CDMG,MINES AND MINERAL RESOURCES OF TRINITY CO,COUNTY REPT.4