Mokelumne River

The Mokelumne River is a gold mine located in Calaveras county, California at an elevation of 249 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: Mokelumne River

Commodity

Primary: Gold
Secondary: Platinum

Location

State: California
County: Calaveras
District: Camanche District (Mokelumne River)

Land Status

Not available

Holdings

Not available

Workings

Type: Surface

Ownership

Owner Name: American Dredging Co.
Years: 1918 -

Production

Not available

Deposit

Record Type: District
Operation Category: Producer
Deposit Type: Stream Placer
Operation Type: Placer
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

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

Mineral Deposit Model

Model Name: Placer Au-PGE

Orebody

Form: STREAM SEDIMENT DEPOSITS

Structure

Not available

Alterations

Not available

Rocks

Name: Gravel
Role: Host
Age Type: Host Rock
Age Young: Holocene

Name: Gravel
Role: Host
Age Type: Host Rock Unit
Age Young: Eocene

Analytical Data

Not available

Materials

Ore: Gold

Comments

Comment (Workings): DREDGING

Comment (Geology): FALSE BEDROCK OF VOLCANIC ASH

Comment (Deposit): RECORD M005603 HAS BEEN DELETED. SEE ALSO: MRDS M045335, M045337.

Comment (Location): MAY INCLUDE CAMANCHE-LANCHA PLANA PLACER. LOCATION GIVEN IS FORMER MOUTH OF CHINA GULCH, NOW BELOW CAMANCHE RESERVOIR

Comment (Deposit): GRAVELS ARE 6-35 FT DEEP, AVERAGE 20 FT

Comment (Production): GOLD PRODUCTION LESS THAN 20 FINE OZ/YR AFTER 1925. SMALL RECOVERY OF PT FROM DREDGING OPERATIONS. PGM AND AU ESTIMATES INCLUDE ORE DERIVED FROM ALL DREDGED AREAS IN AREA OF CAMANCHE RESERVOIR

Comment (General): Changed this from a site to a District because it applies to a stretch of the Mokelumne River, not a particular property.

References

Reference (Production): FIRST PT EST BASED ON MRDS RECORD M005603

Reference (Deposit): LOGAN, C.A., 1919, PLATINUM AND ALLIED METALS IN CALIFORNIA: CALIFORNIA STATE MINING BUREAU BULLETIN 85, P. 31-32.

Reference (Deposit): CLARK, W.B., AND LYDON, P.A., 1962, MINES AND MINERAL RESOURCES OF CALAVERAS COUNTY, CALIFORNIA: CALIFORNIA DIVISION OF MINES AND GEOLOGY COUNTY REPORT 2, P. 76-84.

Reference (Deposit): LOGAN, C.A., 1925, CALAVERAS COUNTY: CALIFORNIA STATE MINING BUREAU, 21ST REPORT OF THE STATE MINERALOGIST, NO. 2, P. 163.

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.