The Esther and Phyllis Mine is a chromium mine located in Placer county, California at an elevation of 3,819 feet.
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
Elevation: 3,819 Feet (1,164 Meters)
Commodity: Chromium
Lat, Long: 39.12472, -120.77528
Map: View on Google Maps
Satelite View
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.
Esther and Phyllis Mine MRDS details
Site Name
Primary: Esther and Phyllis Mine
Commodity
Primary: Chromium
Location
State: California
County: Placer
District: Forest Hill Divide Area
Land Status
Land ownership: National Forest
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: 1943
Time Period: 1941-1943
Material type: ORE CR
Description: Cp_Grade: ^Avg. 46% Cr2o3
Year: 1943
Material type: ORE CR
Description: Ap_Grade: ^ 10.52% Fe
Year: 1942
Material type: ORE CR
Description: Ap_Grade: ^46.89% Cr2o3
Year: 1941
Material type: ORE CR
Description: Ap_Grade: ^47.67% 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
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Chromite
Comments
Comment (Workings): WORKINGS CONSISTED OF BULLDOZER CUTS, SOME SHALLOW OPEN CUTS AND SHAFTS.
Comment (Geology): DEPOSIT IS LOCATED IN THE NORTHERN HALF OF A N-NW TRENDING BELT OF PERIDOTITE EXPOSED OVER AN AREA APPROX. 2 MILES BY 5 MILES AND IS BORDERED BY PALEOZOIC METAMORPHICS AND TERTIARY VOLCANICS.
Comment (Reserve-Resource): CDMG MINERAL PROPERTY REPORT, 1975, UNPUBLISHED
Comment (Location): THE WORKINGS ARE LOCATED JUST SOUTH OF THE SUGAR PINE RD, ABOUT 1.1 MILES WEST OF THE OLD SUGAR PINE GUARD STATION
Comment (Development): A SMALL MILL WAS BUILT TO CONCENTRATE DETRITAL CHROMITE FROM SOIL BUT WAS NOT SUCCESSFUL BECAUSE THE MILL COULD NOT SEPARATE LIMONITIC COATING FROM THE CHROMITE
Comment (Deposit): DEPOSIT CONSISTED OF CHROMITE BOULDERS, FRAGMENTS AND DETRITUS IN THE WEATHERED RESIDUAL SOIL, UP TO 15 FT THICK IN SOME PLACES.
References
Reference (Deposit): STINSON, M.C., 1975, CDMG MINERAL PROPERTY REPORT, UNPUBLISHED
Reference (Deposit): RYNEARSON, G.A., 1953, CDMG BULL 134, PT. 3, CHAPT. 5, P. 215, 216, 308
Reference (Production): CDMG MINERAL PROPERTY REPORT, 1975, UNPUBLISHED
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.
