The Black Rock is a mine located in Trinity 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.
Black Rock MRDS details
Site Name
Primary: Black Rock
Commodity
Tertiary: Manganese
Location
State: California
County: Trinity
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
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: Pacific Border Province
Physiographic Section: Klamath Mountains
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 Jurassic
Analytical Data
Analytical Data: AVERAGE GRADE ABOUT 15 PERCENT MANGANESE
Materials
Ore: Rhodonite
Comments
Comment (Location): LOCATED IN SW 1/4 SECTION 12
Comment (Geology): GEOL.DESC: MANGANESE ORE ABOUT 12 FT. IN DIAMETER OCCURS IN WHITE CHERT BODY WHICH STRIKES N 40 E AND DIPS 55 N. CHERT IS COMPLETELY SURROUNDED BY SERPENTINE, AND IS REGARDED AS A ROOF PENDANT IN SERPENTINE. ORE OCCURS AS BLACK COATINGS ON LIGHT COLORED CHERT, AND COMPACT MASSES OF BLACK OXIDE. SOME PATCHES OF PINK RHODONITE ARE PRESENT, WHICH IS PROBABLY THE PRIMARY MINERAL.
References
Reference (Deposit): D.O.M. BULL. 152 1950 PP. 307 , 309
Reference (Deposit): D.O.M. BULL. 125 1943 P. 196
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.
