The Sherman Ranch Occurrence is a chromium mine located in Nevada county, California at an elevation of 2,402 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: 2,402 Feet (732 Meters)
Primary Mineral: Chromium
Lat, Long: 39.25694, -121.04528
Map: View on Google Maps
Sherman Ranch Occurrence MRDS details
Primary: Sherman Ranch Occurrence
Secondary: Hoeft Lease 1918
District: Nevada City - Grass Valley Area
Land ownership: Private
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: Eleanor E. Hoeft
Years: 1918 -
Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
General Physiographic Area: Pacific Mountain System
Physiographic Province: Cascade-Sierra Mountains
Physiographic Section: Sierra Nevada
Mineral Deposit Model
Comment (Production): APPROX. 500 OR 600 TONS OF MINE-RUN DISSEMINATED ORE CONTAINING 10 TO 15 PERCENT CR2O3 WAS TAKEN TO MILL TO BE CONCENTRATED. THE CONCENTRATES CONTAINED ONLY ABOUT 32 PERCENT CR2O3 AND HAD A HIGH IRON CONTENT. MISS HOEFT REPORTED THAT 146 LONG TONS OF ORE WAS SHIPPED BY HER IN 1918.
Comment (Workings): INCLINED SHAFT 47 FT., DRIFT FROM THE BOTTOM OF THE SHAFT; SMALL STOPE.
Comment (Deposit): THE SHAFT ENCOUNTERED ORE, 12 FT. THICK AT PLACES, MOST OF THE WAY TO THE BOTTOM; THE DRIFT WAS IN ORE AS MUCH AS 10 FT. THICK FOR AT LEAST 30 FT. FROM THE BOTTOM OF THE SHAFT. SOME SHIPPING-GRADE ORE (FLOAT?) WAS SLUICED OFF THE HILLSIDE AND A SMALL LENS OF DISSEMINATED ORE WAS MINED FROM LOWER SLOPE; MAJOR BODY OF ORE WAS NEAR TOP OF THE RIDGE.
Reference (Deposit): D.O.M. BULL. 134, PT. III, CHAP. 5, P. 241, PL. 13
Reference (Deposit): CALIF. JOUR. MINES & GEOLOGY, V. 37, NO. 3, JULY 1941, P. 453