The Joerger is a chromium mine located in El Dorado county, California.
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.
Joerger MRDS details
Site Name
Primary: Joerger
Commodity
Primary: Chromium
Location
State: California
County: El Dorado
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Owner Name: Bertha J. Burton
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
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: Chromite
Comments
Comment (Production): SOME WORK DONE DURING WWI BUT MOST OF ORE FROM THIS PROPERTY MINED IN 1942. EXACT TONNAGE NOT KNOWN AS IT WAS INCLUDED IN COMBINED TONNAGE FROM SEVERAL OTHER MINES. EST. ORE RESERVES ARE 10,000 TO 15,000 TONS CONTAINING 5 TO 8 PERCENT CR2O3. ORE MILLED IN 1942 AVERAGED 8 PERCENT CR2O3.
Comment (Workings): OPEN PIT 150 FT. LONG, 15 TO 40 FT. WIDE, AND 25 FT. DEEP.
References
Reference (Deposit): CALIF. JOUR. MINES & GEOL. V. 52, NO. 4, PP. 387, 471
Reference (Deposit): DOM BULL. 134, PT. 3, CHAP 4, P. 126 AND PL. 8
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.
