Don Pedro Mine

The Don Pedro Mine is a mine located in Tuolumne county, California at an elevation of 899 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

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.

Site Name

Primary: Don Pedro Mine
Secondary: Booker Lease
Secondary: Rosasco Mine

Commodity

Tertiary: Iron
Tertiary: Chromium

Location

State: California
County: Tuolumne
District: Marsh Flats 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

Type: Fee Ownership
Type: Other

Workings

Type: Underground

Ownership

Owner Name: Lavensaler-Speir Corp. (Lastoperator-1918
Home Office: California
Info Year: 1976

Owner Name: Ne Booker,R Powell,Gn Porter (Lastoperator
Home Office: California
Info Year: 1976

Owner Name: Turlock And Modesto Irrigation District 1975
Percent: 50.00
Home Office: California
Info Year: 1976

Owner Name: Edythe R. Banta And Nina Challenor
Percent: 50.00
Home Office: California
Info Year: 1976

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Surface-Underground
Mining Method: Unknown
Year First Production: 1905
Discovery Year: 1905
Years of Production:
Organization:
Significant: N

Physiography

General Physiographic Area: Pacific Mountain System
Physiographic Province: Pacific Border Province
Physiographic Section: California Trough

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Not available

Analytical Data

Not available

Materials

Unknown: Serpentine
Unknown: Chromite
Unknown: Enstatite
Unknown: Olivine
Unknown: Penninite

Comments

Comment (Production): TOTAL PRODUCTION (1905-1918) WAS BETWEEN 561 AND 700 METRIC TONS; AVERAGED 40% CR2O3. NO RESERVE ESTIMATE POSSIBLE (NO ORE IN PLACE) BUT TALIFERRO (1918). GUESSED THAT CONSIDERABLE AMOUNT OR ORE REMAINS. THE AVERAGE MINEABLE GRADE OF CHROMITE IS 40% AND FE IS 11%. INSUFFICIENT DATA FOR MATRIX CALCULATION ANALYSIS BY CDMG IN 1976 GAVE FOLLOWING PERCENTAGES - DISSEMIN. E=S102 07.10, CR2O3 51.16, FEO 17.33, TOTAL FE 20.58, AL203 06.6, 4.09, CR/FE 2.19

References

Reference (Deposit): BRADLEY, W.W., ET AL, 1918, CA STATE MINING BUREAU BULLETIN

Reference (Deposit): 76, P. 213.

Reference (Deposit): CATER, F.W., JR., 1948, TUOLUMENCO, CA DIVISION OF MINES AND

Reference (Deposit): GEOLOGY BULLETIN 134, PT. 3, CHAPTER 1, P. 17-18, PL. 1.

Reference (Deposit): TALIFERRO, N.L., 1918, COOP WAR MINERALS INVEST., CA,

Reference (Deposit): TUOLUMNE CO., #3.

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.