California · San Luis Obispo County
Occurrence
Hearst Ranch-Marmolejo Cr. Deposit
San Luis Obispo 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
10262155
MRDS ID
M020152
Alternate names
Hearst Ranch Prospect, Hearst Ranch-Marmolejo Creek
Region
NA
Data score
D
Coordinates
35.69716, -121.16769
References
CALIF. STATE MINING BUR. BULLETIN 76, 1918, P. 70.CALIF. DIV. MINES BULLETIN 152, 1950, P. 230.U.S. BUR. MINE RI 5579, 1960, P. 44.