Black Rock

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

Name: Black Rock  

State:  California

County:  Trinity

Elevation:

Commodity:

Lat, Long: 40.64861, -123.45194

Map: View on Google Maps

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.


Satelite image of the Black Rock

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

"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.