The Wren Ranch Mangatop is a manganese mine located in Nevada county, California at an elevation of 1,001 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.
Elevation: 1,001 Feet (305 Meters)
Primary Mineral: Manganese
Lat, Long: 39.0475, -121.11472
Map: View on Google Maps
Wren Ranch Mangatop MRDS details
Primary: Wren Ranch Mangatop
District: Lime Kiln
Land ownership: State 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 indicate a claim status and does not necessarily indicate an area is open to prospecting.
Owner Name: R. M. Wren
Owner Name: C. E. Loofbourrow
Record Type: Site
Operation Category: Producer
Operation Type: Unknown
Years of Production:
Deposit Size: S
General Physiographic Area: Pacific Mountain System
Physiographic Province: Cascade-Sierra Mountains
Physiographic Section: Sierra Nevada
Mineral Deposit Model
Analytical Data: AVERAGE GRADE 25 PERCENT MANGANESE
Comment (Deposit): PROPERTY CONSISTS OF 160 ACRES. SHAFT FULL OF WATER IN AUGUST, 1942.
Comment (Location): LOCATED IN S 1/2 SECTION 20 UTM. APPROX
Comment (Production): TEN TONS OF ORE MINED UP TO NOVEMBER 1917, IS REPORTED TO ASSAY 50% TO 60% METALLIC MANGANESE AND 6% SILICA. AVERAGE GRADE OF ORE IS 25 PERCENT MANGANSE. PRODUCED 35 TONS OF ORE IN 1918 CONTAINING 35% MANGANESE AND 7% SILICA.
Comment (Workings): 20-FT. INCLINE SHAFT.
Comment (Geology): GEOL.DESC: ORE BED IS 14 FT. LONG, 10 FT. THICK, AND EXPOSED TO A DEPTH OF 20 FT.
Reference (Deposit): DOM BULL. 125, P. 147; BULL. 76, P. 51; BULL. 152, 1950, P. 164
Reference (Deposit): MAS BACKUP FILE WFOC, NEVADA COUNTY, CALIF.
Reference (Deposit): CALIF. JOUR. MINES & GEOLOGY, V. 37, NO. 3, JULY 1941, P. 442, 467