California · El Dorado County
Past Producer
Pillikin Area 3
El Dorado County, California, United States
Chromium
Nickel
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USGS source ↗
Commodities
Primary
Chromium
Tertiary
Nickel
Commodity type
M
Deposit
Deposit size
S
Orebody form
LAYERS, GRAINS, NODULES, AND LENTICULAR MASSES
Materials
Ore minerals
Chromite
Gangue
Chlorite, Magnesite, Opal, Talc
Geology
Host rock
Dunite,Lherzolite
Associated rock
Diorite,Pyroxenite
Structure
Two Schistose Metadiorite Dike Systems Are Ijected Along Faults That Trend N45w And N65e Across The West Basin.
Alteration
Serpentinization, Silicification, Alteration To Talc And Magnesite.
Economic & production
Development status
Past Producer
Identification
Deposit ID
10043680
MRDS ID
M100579
Alternate names
West Basin
Region
NA
Data score
B
Coordinates
38.78128, -121.09242
References
CDMG BULL 134, P. 139-141USGS BULL. 922-0, P. 447-451.CDMG BULL 134, P. 140.COMG BULL 134, P. 140