California · Calaveras County
Past Producer
Madrid Mine
Calaveras County, California, United States
Chromium
Iron
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USGS source ↗
Commodities
Tertiary
Chromium, Iron
Commodity type
M
Deposit
Workings
Surface, Underground
Materials
Other materials
Asbestos, Chlorite, Chromite, Serpentine, Talc
Economic & production
Development status
Past Producer
First production
1917
Discovery year
1916
Identification
Deposit ID
10138501
Alternate names
True Blue, Genochio Mine
Region
NA
Data score
C
Coordinates
38.14301, -120.51291
References
CAL STATE,MINING BUR BULL 76 P.123, 1918CAL. DIV. MINES GEOL. BULL 134 PT3, CHAP 2, P.56-57COOP WAR MINERALS INVEST PROJ,CALAVERAS CO NO.17 TALIAFERROMINES & MINERAL RESOURCES CALAVERAS.COUNTY REPT NO.2 P.22,12