The Mahoney is a manganese mine located in San Joaquin 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.
Mahoney MRDS details
Site Name
Primary: Mahoney
Secondary: Doak
Secondary: Johnson Lease
Commodity
Primary: Manganese
Location
State: California
County: San Joaquin
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: L
Physiography
General Physiographic Area: Pacific Mountain System
Physiographic Province: Pacific Border Province
Physiographic Section: California Coast Ranges
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Name: Chert
Role: Host
Age Type: Host Rock Unit
Age Young: Late Cretaceous
Name: Chert
Role: Host
Age Type: Host Rock
Age Young: Late Cretaceous
Analytical Data
Not available
Materials
Ore: Psilomelane
Comments
Comment (Location): LOCATED IN NE 1/4 SECTION 11 , UTM APPROX
Comment (Geology): ORE HOSTED IN FRANCISCAN COMPLEX--L. TO L. ; GEOL.DESC: ORE BODIES ARE NEAR THE BASE OF A THICK LENS OF FRANCISCAN CHERT IN APPROXIMATELY THE SAME STRATIGRAPHIC HORIZON AS THE LADD MINE. THE BODIES ARE 25 FT. APART, STRIKE N 35 W, AND DIP STEEPLY. THE NO. 2 ORE BED IS MANGANESE OXIDE IN A SILICEOUS MATRIX, WITH LESS THAN 10 PERCENT MANGANESE. THE NO. 1 ORE BED IS OVER 60 FT. LONG, 8 TO 10 FT. THICK AND EXTENDS 30 FT. UP AND DOWN DIP. THIS BED CONTAINS HIGH GRADE ORE. THE ORE MATERIAL PRESENT IS CELLULAR CHERT VEINED AND PARTLY REPLACED BY MANGANESE OXIDES. THE LOWER ORE BODY IS OFFSET VERTICALLY BY AT LEAST 3 FAULTS WHICH STRIKE N. W.
References
Reference (Deposit): D.O.M. BULL. 152 1950 PP. 226 - 22
Reference (Deposit): D.O.M. BULL. 125 1943 P. 167
Reference (Deposit): TRASK, PARKER. NOTES ON THE MANGANESE RESOURCES OF CALIF., 1944 , UNPUB.
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.
