The Dorsey and Ridge Claims is a chromium mine located in Nevada county, California at an elevation of 2,119 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: 2,119 Feet (646 Meters)
Commodity: Chromium
Lat, Long: 39.19167, -121.12806
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.
Dorsey and Ridge Claims MRDS details
Site Name
Primary: Dorsey and Ridge Claims
Commodity
Primary: Chromium
Location
State: California
County: Nevada
District: Wolf Creek 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
Not available
Ownership
Owner Name: L. V. Dorsey And D. R. Ridge
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Discovery Year: 1917
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
Ore: Chromite
Comments
Comment (Production): OPERATORS REPORTED THAT IN 1918 54 LONG TONS OF ORE CONTAINING 30 TO 45 PERCENT CR2O3 HAD BEEN MINED BUT NOT SHIPPED. IT IS NOT KNOW WHETHER ANY OF THIS ORE WAS SHIPPED AT A LATER DATE. WHEN INSPECTED IN 1918 IT WAS REPORTED THAT 50 LONG TONS OF ORE HAD BEEN MINED AND PERHAPS 25 TONS REMAINED UNMINED.
Comment (Workings): NUMEROUS SMALL PITS ON OUTCROPS; SHAFT 12 FT. DEEP.
Comment (Deposit): FOUR CHROMITE CLAIMS, 80 ACRES. ORE IN THE OUTCROPS WAS TOO LOW IN GRADE TO SHIP. THE SHAFT OPENED THE LENS OF MORE MASSIVE ORE WHICH WAS SAID TO CONTAIN 40 TO 52 PERCENT CR2O3.
References
Reference (Deposit): CALIF. JOUR. MINES & GEOLOGY, V. 37, NO. 3, JULY 1941, P. 449
Reference (Deposit): D.O.M. BULL. 134, PT. III, CHAP. 5, P. 247, PL. 13
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.
