The Grau Mine is a chromium mine located in Tehama county, California at an elevation of 2,480 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: 2,480 Feet (756 Meters)
Commodity: Chromium
Lat, Long: 40.0267, -122.67170
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.
Grau Mine MRDS details
Site Name
Primary: Grau Mine
Secondary: North Elder Creek Group
Commodity
Primary: Chromium
Tertiary: Iron
Location
State: California
County: Tehama
District: North Elder Crk
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: Unknown
Workings
Not available
Ownership
Owner Name: John K. Withers
Percent: 100.0
Home Office: California
Info Year: 1985
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Underground
Mining Method: Unknown
Year First Production: 1942
Discovery Year: 1886
Years of Production:
Organization:
Significant: N
Physiography
General Physiographic Area: Pacific Mountain System
Physiographic Province: Pacific Border Province
Physiographic Section: California Coast Ranges
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Unknown: Antigorite
Unknown: Enstatite
Unknown: Magnesite
Unknown: Olivine
Unknown: Chromite
Comments
Comment (Deposit): 3/75 ORE BODY TYPE - DISSEMINATED,STRINGERS & MASSIVE; ORE & Y ROCK FORMING CONTEMPORANEOUSLY. MINE CAP CST-DEV.15M; EQIP INCL. IN 061030011; WORK CAP.125M DEV0; EXP0: CUSTOM MILL,NO CAPIT.COSTS INVOLVED: CR/FE RATIO ALTERATION TYPE-SERPENTINIZATION E=S102 01.77,CR2O3 52.62,FEO 11.29,TOTAL FE 14.79,AL203 12.6 5.75,CR/FE 3.13
Comment (Reserve-Resource): THE 39,000 MT. ARE MINED WITH THREE OTHER PROPERTIES IN THE AREA. THE COST AND MINING METHODS ARE UNDER SEQ. NO. 0061030010.
Comment (Reserve-Resource): IN DEPOSIT REPORT "CHROMITE DEPOSITS OF THE NORTHELDER CREEK AREA, TECHAMA COUNTY, CALIFORNIA."ALSO SEE SEQ# 0061030010.
References
Reference (Deposit): WFOC MIN PROP FILE.
Reference (Deposit): CALIF DIV MINES GEOL BULL 134 CH3 PP133-191 1965.
Reference (Deposit): USGS BULL 945-G PP190-210 1946.
Reference (Deposit): CALIF JOUR MINES GEOL V42 NO3 PP183-195 1946.
Reference (Deposit): CALIF STATE DIV MINES 39TH REPT STATE MINERAL CH1 PP90-92 19
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.
