The Oro Grande is a copper mine located in Nevada county, California at an elevation of 7,349 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: 7,349 Feet (2,240 Meters)
Commodity: Copper
Lat, Long: 39.40306, -120.50778
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.
Oro Grande MRDS details
Site Name
Primary: Oro Grande
Commodity
Primary: Copper
Secondary: Silver
Secondary: Gold
Location
State: California
County: Nevada
District: Meadow Lake
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
Not available
Ownership
Owner Name: J. P. Clark And F. J. Cook
Years: 1908 -
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Vein
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
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Pyrite
Ore: Chalcopyrite
Ore: Bornite
Ore: Malachite
Gangue: Quartz
Comments
Comment (Deposit): WAS A FREE MILLING QUARTZ MINE UNTIL SULFIDE ZONE WAS REACHED COMPRISED OF 80 ACRES.
Comment (Deposit): GOSSAN IS IRON - STAINED PORPHYRY, THERE ARE 20 PARALLEL VEINS EXPOSED IN PLACES - CROPPINGS FOR 4500 FT., OXIDES FROM 1 - 10 FT. IN DEPTH.
Comment (Workings): VERTICAL SHAFT 32 FT., 3-COMPARTMENT VERTICAL SHAFT 125 FT., 2-COMPARTMENT SHAFT, VERTICAL 105 FT.,200 FT. OF OPEN CUTS; 30-FT. ADIT ON VEIN.
Comment (Production): PRODUCTION OF COPPER LESS THAN 100,000 POUNDS. VALUES REPORTED, COPPER 5 PER CENT, GOLD $7, SILVER 3 OZ. WAS WORKED 45 YEARS PRIOR TO 1908.
References
Reference (Deposit): AUBURY, L. E., 1908 , COPPER RESOURCES OF CALIFORNIA BULL 50 ; CALIF. MIN. BUR., P. 199
Reference (Deposit): MACBOYLE, E. 1918 , MINES AND MINERAL RESOURCES OF NEVADA COUNTY; 16TH REPT. STATE MIN.; CALIF. MIN. BUR., P 88
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.
