The Yolla Bolly Mountain Claims 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
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Yolla Bolly Mountain Claims MRDS details
Site Name
Primary: Yolla Bolly Mountain Claims
Secondary: Emma
Secondary: Bertha
Secondary: Dahrman
Secondary: Lonesome Pine
Secondary: Black Diamond
Secondary: Black Pearl
Secondary: Reliance and Superior Claims.
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
Not available
Analytical Data
Analytical Data: ASSAYS REPORTED 24 TO 48 PERCENT MANGANESE, 1 TO 2 PERCENT IRON, AND 20 TO 46 PERCENT SILICA.
Materials
Ore: Hausmannite
Ore: Braunite
Gangue: Limonite
Comments
Comment (Location): LOCATED IN SE 1/4 SECTION 32 , SW 1/4 SECTION 33 , UTM APPROX
Comment (Geology): GEOL.DESC: MANGANIFEROUS CHERT AND RHODOCHROSITE IN A BELT OF THIN AND MASSIVE CHERT 500 FT. THICK, AND AT LEAST 1 MI. LONG. GENERAL STRIKE IS N 70 W AND DIP IS 30 N. E. CHERT IS SUCCEEDED BY FRANCISCAN SANDSTONE AND SHALE ON EITHER SIDE. BEDS ARE FOLLOWED BY SCHIST AND PHYLLITE ABOUT 5000 FT. ACROSS STRIKE TO N. E. MANY SMALL FAULTS RESULTED IN STRONGLY CONTORTED CHERT BODIES IN PLACES. MANGANESE, EXPOSED IN 9 OR 10 LOCALITIES, IS MOSTLY SMALL ORE POCKETS. MASSIVE WHITE CHERT LENSES ARE STAINED. 2 EXTENSIVE OCCURRENCES, WITH MAXIMUM THICKNESSES OF 12 AND 2 FT. AVERAGE WIDTH OF MAIN ZONE IS 4 FT, BUT THIS VARIES CONSIDERABLY. RELATIVELY LITTLE OXIDE IS PRESENT. HIGH GRADE ORE IS BRAUNITE OR HAUSMANNITE, AND IS CUT BY RHODOCHROSITE VEINLETS. REST OF PRIMARY ORE IS A HYDROUS MANGANESE SILICATE, PROBABLY NEOTOCITE OR BEMENTITE.
References
Reference (Deposit): D.O.M. BULL. 152 1950 PP. 305 - 306 , 314 , 315
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.
