The Expansion is a gold mine located in El Dorado county, California at an elevation of 1,362 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: 1,362 Feet (415 Meters)
Commodity: Gold
Lat, Long: 38.71556, -120.89750
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.
Expansion MRDS details
Site Name
Primary: Expansion
Commodity
Primary: Gold
Location
State: California
County: El Dorado
Land Status
Not available
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
Analytical Data: ALL GOLD IN SULFIDES
Materials
Ore: Pyrite
Ore: Gold
Gangue: Quartz
Comments
Comment (Location): UTM ACC SE 1/4 OF SW 1/4 SEC
Comment (Deposit): VEIN
Comment (Workings): DEVELOPED BY 150 FT CROSS CUT ADIT
Comment (Commodity): DISSEMINATED PYRITE
Comment (Production): NO PRODUCTION RECORD FOUND ACTIVE 1900 - 1904 , PROSPECTED IN 1936
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. 500 AND PL 10 .
Reference (Deposit): LOGAN, C. A., 1938 , MIN. RESOURCES OF EL DORADO CO.: CALIF. JOUR. OF MINES AND GEOL., VOL. 34 , NO. 3 , PG. 229 .
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.
