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
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.
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" 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.
