The Black Brothers is a mine located in Los Angeles 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 Brothers MRDS details
Site Name
Primary: Black Brothers
Secondary: Llewellyn Iron
Commodity
Tertiary: Manganese
Location
State: California
County: Los Angeles
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: Los Angeles Ranges
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Name: Schist
Role: Host
Age Type: Host Rock
Age Young: Late Cambrian
Analytical Data
Analytical Data: AVERAGE GRADE 20 PERCENT MANGANESE
Materials
Ore: Spessartite
Ore: Psilomelane
Ore: Rhodonite
Comments
Comment (Location): PART OF AMARGOSA GROUP, LLEWELLYN IRON, LOCATED IN N.E. 1/4 SECTION 30 , UTM APPROX
Comment (Geology): GEOL.DESC: MANGANIFEROUS BED OF QUARTZITE (METAMORPHOSED CHERT) ENCLOSED IN THE QUARTZ MICA PELONA SCHIST, OF PRECAMBRIAN AGE. MANGANIFEROUS BED IS 1 1/2 TO 9 FT THICK; 165 FT. LONG, AND MAXIMUM DEPTH IS 10 FT. THE ORE IS OFFSET BY SMALL CROSS FAULTS. THE MANGANESE ORE IS PARTIALLY OXIDIZED RHODONITE AND SPESSARTITE, CUT BY QUARTZ VEINLETS. SOME MATERIAL HAS BEEN OXIDIZED TO PSILOMELANE.
References
Reference (Deposit): D.O.M. BULL. 152 1950 PP. 100 - 101
Reference (Deposit): D.O.M. BULL. 125 1943 P. 65 , 129
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.
