The Alderson is a 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.
Alderson MRDS details
Site Name
Primary: Alderson
Commodity
Tertiary: Manganese
Location
State: California
County: El Dorado
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Owner Name: Albert Earl Harris
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
Name: Rhyolite
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene
Name: Rhyolite
Role: Associated
Age Type: Host Rock
Age Young: Pliocene
Analytical Data
Analytical Data: ORE GRADE UP TO 26 PERCENT MANGANESE
Materials
Not available
Comments
Comment (Production): NO RECORD OF ANY PRODUCTION. ASSAYS AS HIGH AS 25 PERCENT MANGANESE.
Comment (Geology): GEOL.DESC: ZONE OF ARKOSIC SANDSTONE 150 FT. LONG AND CEMENTED BY BLACK MANGANESE OXIDE. ASSAYS YIELD AS HIGH AS 25.9 PERCENT METALLIC MANGANESE. THE SANDSTONE OCCURS IN FLAT LYING TERTIARY VOLCANICS AND IS INTERBEDDED WITH RHYOLITE TUFF BELOW AND AN ANDESITIC AGGLOMERATE ABOVE.
References
Reference (Deposit): CALIF. JOUR. MINES & GEOL. V. 52, NO. 4, P. 575, PL. 10
Reference (Deposit): D.O.M. BULL. 152 1950 P. 51
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.
