The Armstrong No. 2 Prospect is a manganese mine located in Trinity county, California at an elevation of 3,501 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: 3,501 Feet (1,067 Meters)
Commodity: Manganese
Lat, Long: 40.18806, -123.30361
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.
Armstrong No. 2 Prospect MRDS details
Site Name
Primary: Armstrong No. 2 Prospect
Commodity
Primary: 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: 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 Jurassic
Analytical Data
Analytical Data: AVERAGE GRADE ABOUT 40 PERCENT MANGANESE
Materials
Ore: Hausmannite
Ore: Rhodochrosite
Comments
Comment (Geology): GEOL.DESC: ORE OCCURS IN RED AND WHITE CHERT BELT THAT STRIKES N. W. AND DIPS 60 TO 80 N. TWO ORE ZONES EACH ABOUT 3 FT. THICK ARE SEPARATED BY BARREN ZONE IN BELT OF MASSIVE CHERT 200 FT. THICK. ORE CAN BE TRACED ALONG STRIKE FOR 40 FT. ORE ON N. SIDE OF MINERALIZED ZONE IS RICHER, ABOUT 40 PERCENT MANGANESE. IT CONSISTS OF BLACK OXIDES AT SURFACE, TO RHODOCHROSITE, HAUSMANNITE AND BEMENTITE WITH DEPTH. S. PART OF ORE ZONE IS MAINLY MANGANIFEROUS CHERT OR NEOTOCITE, ABOUT 15 PERCENT MANGANESE. SOME STAINS OF GREEN COPPER MINERALS ARE PRESENT.
Comment (Location): LOCATED IN SW 1/4 SECTION 20
References
Reference (Deposit): D.O.M. BULL. 152 1950 PP. 302 - 303
Reference (Deposit): D.O.M. BULL. 125 1943 P. 194
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.
