The Blue Jay Mine is a manganese mine located in Trinity county, California at an elevation of 4,199 feet.
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
Elevation: 4,199 Feet (1,280 Meters)
Commodity: Manganese
Lat, Long: 40.11194, -123.24500
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.
Blue Jay Mine MRDS details
Site Name
Primary: Blue Jay Mine
Secondary: Blue Bird Claim
Commodity
Primary: Manganese
Location
State: California
County: Trinity
Land Status
Land ownership: National Forest
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
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: ORE GRADE PRIMARY ORE 50 TO 55 PERCENT MANGANESE 6 TO 10 PERCENT SILICA, AND 3 TO 9 PERCENT CARBON DIOXIDE.
Materials
Ore: Hausmannite
Ore: Rhodochrosite
Gangue: Copper
Gangue: Cuprite
Gangue: Malachite
Gangue: Chalcocite
Comments
Comment (Geology): ORE HOSTED IN FRANCISCAN COMPLEX--L. TO L. ; GEOL.DESC: MANGANESE ORE OCCURS IN TWO BEDS AVERAGING 3 TO 4 FT. IN THICKNESS, ABOUT 15 FT APART ENCLOSED IN THIN-BEDDED FRANCISCAN CHERT. ON E. SLOPE OF RIDGE AVERAGE STRIKE IS N. 55 W., DIPPING 60 TO 75 N. E. THIS TREND CONTINUES W. TO RIDGE CREST WHERE A FAULT STRIKING N 50 E AND DIPPING 55 S. E. DISPLACES BEDS SLIGHTLY. W. OF FAULT BEDS STRIKE N 20 TO 30 W AND DIP 20 TO 30 N. E. THIN GREENSTONE BODY EXPOSED WAS APPARENTLY INJECTED ALONG CONTACT OF CHERT AND SANDSTONE. N. W. OF GREENSTONE, CHERT MERGES ALONG STRIKE WITH SANDSTONE. ORE IS LARGELY PRIMARY, AS SURFACE OXIDATION FORMS BLACK OXIDE COATING 1 TO 2 INCHES THICK. PRIMARY ORE IS MOSTLY REDDISH-BROWN HAUSMANNITE, CUT BY RHODOCHROSITE VEINLETS, OR HYDROUS SILICATES. QUARTZ VEINS CARRY SOME CHALCOCITE. SECONDARY COPPER MINERALS PRESENT ARE NATIVE COPPER, CUPRITE AND MALACHITE.
Comment (Location): LOCATED IN NW 1/4 SECTION 17
References
Reference (Deposit): D.O.M. BULL. 152 1950 PP. 308 - 310
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.
