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Mine detail: Pillikin Area 3
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North America
United States
California
El Dorado
Previously called 'West Basin'
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Location
Lat / long:
38.78128, -121.09242
Resource(M)
Primary:
Chromium
Tertiary:
Nickel
Ore:
Chromite
Gangue:
Chlorite, Magnesite, Opal, Talc
Orebody form:
LAYERS, GRAINS, NODULES, AND LENTICULAR MASSES
Production
Operation type:
Unknown
Production size:
Small
Development status:
Past Producer
Geology
Host type:
Dunite,Lherzolite
Associated type:
Diorite,Pyroxenite
Structure:
Two Schistose Metadiorite Dike Systems Are Ijected Along Faults That Trend N45w And N65e Across The West Basin.
Alteration processes:
Serpentinization, Silicification, Alteration To Talc And Magnesite.
References
MRDS
M100579
DEP
10043680
Reference
{Deposit:: CDMG BULL 134, P. 139-141}{Deposit:: USGS BULL. 922-0, P. 447-451.}{Production:: CDMG BULL 134, P. 140.}{Reserve-Resource:: COMG BULL 134, P. 140}
Reporter
Oster, Karel L. (Albers, John P.)