The Ladd Mine 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.
Ladd Mine MRDS details
Site Name
Primary: Ladd Mine
Secondary: Carral Hollow
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
Age Young: Late Cretaceous
Name: Chert
Role: Host
Age Type: Host Rock Unit
Age Young: Late Cretaceous
Analytical Data
Analytical Data: AVERAGE 18 PERCENT MANGANESE UNSORTED
Materials
Ore: Bementite
Comments
Comment (Geology): ORE HOSTED IN FRANCISCAN COMPLEX--L. TO L. ; GEOL.DESC: 2 ORE BEDS LIE IN CHERT MORE THAN 200 FT IN THICKNESS WHICH STRIKES N. W. AND DIPS FROM 30 TO 90 S. W. IN PLACES THE BEDS ARE FOLDED. THE TWO ORE BODIES ARE 125 FT. APART. THE LOWEST OR EAST ONE IS 800 FT. LONG, MAXIMUM THICKNESS OF 35 FT, AND CONSISTS OF 1 TO 16 FT. OF HIGH GRADE ORE AT BASE WITH 2 TO 30 OF DISSEMINATED ORE ABOVE. UPPER ORE BODY IS 125 FT. LONG, 100 FT. MAXIMUM WIDTH, AND 4 FT. MAXIMUM THICKNESS. 2 STEEP ANGLE FAULTS HAVE CAUSED THE BLACK BETWEEN THE FAULTS TO BE DISPLACED 200 FT. TO THE W. MANY MINOR FAULTS ARE PRESENT. ORE PASSES INTO CARBONATE AND BEMENTITE AT THE LOWER LEVEL.
References
Reference (Deposit): D.O.M. BULL. 152 1950 PP. 223 - 226
Reference (Deposit): D.O.M. BULL. 125 1943 P. 166
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.
