California · Contra Costa County
Producer
Red Rock
Contra Costa County, California, United States
Manganese
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USGS source ↗
Commodities
Primary
Manganese
Commodity type
M
Deposit
Deposit size
S
Materials
Ore minerals
Mineral Paint, Psilomelane
Geology
Host rock
Shale,Chert · Franciscan Complex
Economic & production
Development status
Producer
Identification
Deposit ID
10029596
MRDS ID
M007243
Region
NA
Data score
C
Coordinates
37.92879, -122.43077
References
CALIF. JOUR. VOL. 47, NO. 4, OCT. 1951, P. 575; V. 54, NO. 4, OCT. 1958, P.529, 573.D.O.M. BULL. 152 1950 P. 50