The Josephson Prospect is a manganese mine located in Butte 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.
Josephson Prospect MRDS details
Site Name
Primary: Josephson Prospect
Commodity
Primary: Manganese
Tertiary: Gold
Location
State: California
County: Butte
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Owner Name: W. C. Josephson
Home Office: Oroville, Ca.
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
Analytical Data: AVERAGE 30 PERCENT MANGANESE
Materials
Ore: Pyrolusite
Comments
Comment (Production): NO PRODUCTION
Comment (Workings): SEVERAL PITS EXPOSE MATERIAL THAT REPORTEDLY MAY AVERAGE ABOUT 30% MNO
Comment (Geology): GEOL.DESC: BLACK MANGANESE OXIDE OCCURING IN CHERT ENCLOSED IN BLACK SLATE OR PHYLLITE. ORE BODIES ARE TABULAR WITH A TOTAL THICKNESS OF ABOUT 10 FT. AND ARE MOSTLY SOFT PYROLUSITE, INTERMINGLED WITH WHITE SILICA. AVE. GRADE 30 % MANGANESE.
Comment (Deposit): IN CHERT. SPECIMENS MIGHT CONTAIN 40% MN, BUT GENERAL RUN PROBABLY 30% DIP N 45 DEG. E AT 75 DEG.
Comment (Location): LOCATED IN SE 1/4 NW 1/4 SECTION 10 , MAY BE THIS MINE BUT IS SHOWN IN BULL. 184 AS A GOLD PROSPECT
References
Reference (Deposit): CALIF. DIV. OF MINES BULLETIN 152 (1950) P. 36; B. 125 (1943) P. 104
Reference (Deposit): SOUTHERN PACIFIC CO., MINERALS FOR INDUSTRY, NORTHERN CALIF. V. 2, P. 60
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.
