California · Madera County
Prospect
Heriford and Butler Claims
Madera County, California, United States
Silver
Copper
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USGS source ↗
Commodities
Primary
Silver
Tertiary
Copper
Commodity type
M
Economic & production
Development status
Prospect
Identification
Deposit ID
10188215
Region
NA
Data score
D
Coordinates
37.68803, -119.08736
References
CALIF. STATE MINING BUR. REPORT 22, 1926, P. 546, 547.CALIF. DIV. MINES REPORT 30, 1934, P. 75.U.S. GEOLOGICAL SURVEY BULLETIN 1516-D, 1982, P. 126-127.