Bunker Mine

The Bunker Mine is a mine located in Placer county, California at an elevation of 3,428 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

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.

Site Name

Primary: Bunker Mine
Secondary: Blue Bird Mine

Commodity

Tertiary: Chromium
Tertiary: Iron

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

Type: Private Lease

Workings

Type: Surface

Ownership

Owner Name: Embree, L. G.
Home Office: California
Info Year: 1976
Years: 1942 - 1943

Owner Name: U.S. Forest Service - Tahoe National Forest
Percent: 100.0
Home Office: California
Info Year: 1976

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Surface-Underground
Mining Method: Unknown
Year First Production: 1917
Discovery Year: 1880
Years of Production:
Organization:
Significant: N

Physiography

General Physiographic Area: Pacific Mountain System
Physiographic Province: Cascade-Sierra Mountains
Physiographic Section: Sierra Nevada

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Not available

Analytical Data

Not available

Materials

Unknown: Chromite
Unknown: Olivine
Unknown: Serpentine
Unknown: Uvarovite
Unknown: Pyroxene

Comments

Comment (Deposit): AVERAGE GRADE SHIPPED 1942-43 WAS 40.64% CR2O3,12.23% FE WIT FE RATIO OF 2.27 MINE IDLE SINCE 1943. NO ESTIMATES OF RES N LITERATURE--NO ORE IN PLACE SEEN AT MINE INSUFFICIENT DATA FOR MATRIX CALCULATIONS. ANALYSIS BY CDMG IN 1976 GAVE FOLLOWING PERCENTAGES-EAST WOR ASSIVE ORE=S102 1.46,CR2O3 49.33,FEO 10.52,TOTAL FE 14.47,AL 09,MGO 16.58,CR/FE 3.00.EAST WORKINGS MODULAR ORE=S102 2.30, 4.08,FEO 13.04,TOTAL FE 15.44,AL203 12.28,MGO 15.75,CR/FE 3. IVE ORE,WEST WORKINGS=S102 4.02,CR2O3 42.02,FEO 13.34,TOTAL 0,AL203 14.09,MGO 12.85,CR/FE 1.92.

References

Reference (Deposit): RYNEARSON,GA 1953. CAL DIV MINES BULL 134,PT 3,CH 5. PP 224-

Reference (Deposit): BRADLEY,WW ET AL 1918,MN&CR IN CAL.CAL ST MINING BUR BULL 76

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.