The Cosumnes is a gold mine located in El Dorado county, California at an elevation of 3,921 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: 3,921 Feet (1,195 Meters)
Commodity: Gold
Lat, Long: 38.66472, -120.53361
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.
Cosumnes MRDS details
Site Name
Primary: Cosumnes
Secondary: Melton
Secondary: Middle End
Commodity
Primary: Gold
Secondary: Silver
Secondary: Lead
Tertiary: Copper
Tertiary: Zinc
Tertiary: Antimony
Location
State: California
County: El Dorado
Land Status
Land ownership: National Forest
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
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past 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
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Gold
Ore: Galena
Ore: Pyrite
Ore: Sphalerite
Ore: Chalcopyrite
Ore: Stibnite
Gangue: Quartz
Comments
Comment (Deposit): VEIN, MOST OF ORE FROM MAIN OR MIDDLE END VEIN, DIPS STEEPLY, AVE 3 FT. IN THICKNESS
Comment (Workings): DEVELOPED BY 380 FT. SW CROSSCUT ADIT AND SEVERAL THOUSAND FEET OF DRIFTS
Comment (Deposit): CALLED MELTON MINE IN EARLY OPERATIONS AND IN 1928 THE MIDDLE END MINE ; INFO.SRC : 1 PUB LIT
Comment (Commodity): ORE CONTAINED UP TO $25 PER TON AU WITH SULFIDE CONCENTRATES YIELDING $100 TO $200 PER TON AU
Comment (Production): ACTIVE 1880'S, 1894 , 1928 - 42 , 1942 - 1951
References
Reference (Deposit): CLARK, W. B., AND CARLSON, D. W., 1956 , MINES AND MINERAL RESOURCES OF EL DORADO CO., CALIF.: CALIF. JOUR. OF MINES AND GEOL., VOL. 52 , NO. 4 , PG. 413 , 494 AND PL. 10 .
Reference (Deposit): GOODWIN, J. G., 1957 , LEAD AND ZINC IN CALIF.: CALIF. DIV. MINES. VOL. 53 , NO. 3 & 4 , P. 441 .
Reference (Deposit): LOGAN, C. A., 1938 , MIN. RESOURCES OF EL DORADO CO.: CALIF. JOUR. OF MINES AND GEOL., VOL. 34 , NO. 3 , PL. II.
Reference (Production): GOODWIN ( 1957 )
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.
