Mapes-O:Hara Lease Occurrence, Beckwith Ranch Mines

The Mapes-O:Hara Lease Occurrence, Beckwith Ranch Mines is a chromium mine located in Tuolumne county, California at an elevation of 1,401 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: Mapes-O:Hara Lease Occurrence, Beckwith Ranch Mines  

State:  California

County:  Tuolumne

Elevation: 1,401 Feet (427 Meters)

Commodity: Chromium

Lat, Long: 37.88278, -120.48889

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.


Satelite image of the Mapes-O:Hara Lease Occurrence, Beckwith Ranch Mines

Mapes-O:Hara Lease Occurrence, Beckwith Ranch Mines MRDS details

Site Name

Primary: Mapes-O:Hara Lease Occurrence, Beckwith Ranch Mines


Commodity

Primary: Chromium


Location

State: California
County: Tuolumne
District: Chinese Camp 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: R. B. Beckwith


Production

Not available


Deposit

Record Type: Site
Operation Category: Producer
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

Form: IRREG


Structure

Not available


Alterations

Not available


Rocks

Name: Serpentinite
Role: Host
Age Type: Host Rock
Age Young: Late Jurassic


Analytical Data

Not available


Materials

Not available


Comments

Comment (Location): PREVIOUS QUAD DESIGNATION = SAN JOSE 1:250000

Comment (Workings): WORKINGS CONSISTED OF SMALL PITS AND SHAFTS LESS THAN 25 FT DEEP.

Comment (Geology): THE DEPOSIT OCCURS IN THE NORTHERN PART OF THE WEST ERNMOST OF TWO SERPENTINE BELTS THAT TREND NW ACROSS THE COUNTY. THE BELT IS EXPOSED OVER AN AREA OF 30KM BY 6KM.


References

Reference (Deposit): CATER, F.W.JR., 1948, CDMG BULL 134, PART 3, CHAPT. 1, P.20


California Gold

Where to Find Gold in California

"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.