Dorsey and Ridge Claims

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

Name: Dorsey and Ridge Claims  

State:  California

County:  Nevada

Elevation: 2,119 Feet (646 Meters)

Primary Mineral: Chromium

Lat, Long: 39.19167, -121.12806

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Satelite image of the Dorsey and Ridge Claims

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 indicate a claim status and does not necessarily indicate an area is open to prospecting.


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