The Pillikin Area 1 is a chromium mine located in El Dorado county, California.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
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MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.
Pillikin Area 1 MRDS details
Site Name
Primary: Pillikin Area 1
Secondary: East Basin
Commodity
Primary: Chromium
Location
State: California
County: El Dorado
District: Flagstaff Hill Area
Land Status
Land ownership: Private
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Holdings
Not available
Workings
Type: Surface
Ownership
Not available
Production
Year: 1942
Time Period: 1940-1942
Material type: ORE
Description: Cp_Grade: ^11% Cr2o3
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Pacific Mountain System
Physiographic Province: Cascade-Sierra Mountains
Physiographic Section: Sierra Nevada
Mineral Deposit Model
Not available
Orebody
Form: IRREGULAR VEINS, LENSES
Structure
Type: L
Description: A Large Fault Trending N 25 E Cuts Off Ore Bearing Dunite To South.
Alterations
Alteration Type: L
Alteration Text: Serpentinization, Alternation To Talc And Magnesite.
Rocks
Not available
Analytical Data
Analytical Data: ENTIRE ORE ZONE CONTAINS 5-10% CR2O3
Materials
Ore: Chromite
Gangue: Serpentine
Gangue: Talc
Gangue: Magnesite
Gangue: Diallage
Gangue: Olivine
Gangue: Enstatite
Comments
Comment (Reserve-Resource): ESTIMATION OF ORE RESERVES MUST AWAIT DRAINAGE OF PIT.
Comment (Workings): WORKINGS CONSIST (1951) OF A LARGE OPEN PIT WITH ABOVE DIMENSIONS, WHICH IS NOW FLOODED.
Comment (Geology): PILLIKIN DEPOSITS OCCUR IN A TABULAR, NNW-TRENDING ULTRAMAFIC BODY, 3/4 MI WIDE AND 4 MI LONG, THAT DIPS STEEPLY TO THE EAST.
References
Reference (Deposit): USGS BULL. 922-0, P. 441-444
Reference (Deposit): CDMG BULL 134, P. 137-138
Reference (Deposit): 1940 GEOLMAP WELLS, PAGE, JAMES, YATES, FURNISH, KOENIG USGS BULL 922-
Reference (Production): CDMG BULL 134, P. 138
Reference (Reserve-Resource): CDMG BULL 134, P. 138.
California Gold
"Where to Find Gold in California" looks at the density of modern placer mining claims along with historical gold mining locations and mining district descriptions to determine areas of high gold discovery potential in California. Read more: Where to Find Gold in California.
