The Alta Hill Mine is a chromium mine located in Nevada county, California at an elevation of 2,598 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: 2,598 Feet (792 Meters)
Primary Mineral: Chromium
Lat, Long: 39.23472, -121.06500
Map: View on Google Maps
Alta Hill Mine MRDS details
Primary: Alta Hill Mine
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: W. V. Mau, O. R. Heidrick, L. W. Williams
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 (Location): MINE LOCATED ON N SIDE OF ROAD BETWEEN GRASS VALLEY AND NEVADA CITY, CA.
Comment (Production): A STATE REPORT INDICATED ABOUT 250 TONS OF MILLING-GRADE ORE CONTAINING 15 TO 18 PERCENT CR2O3 PRODUCED WITH ABOUT 150 TONS SHIPPED IN 1918. WILLIAMS REPORTED SHIPMENTS OF ONLY 117 LONG TONS AND STOCKS OF 61 TONS IN 1918. IN 1937 WILLIAMS SOLD ABOUT 60 LONG TONS.
Comment (Workings): TWO GROUPS OF WORKINGS ABOUT 100 FT. APART, CONSISTING OF SOME OPEN CUTS AND TWO SHAFTS, 20 FT. AND 30 FT. WITH DRIFT OF ABOUT 50 FT.
Comment (Deposit): SOME OF THE ORE SHIPPED CONTAINED 31 TO 36 PERCENT CR2O3. ; INFO.SRC : 1 PUB LIT
Reference (Deposit): D.O.M. BULL. 134, PT. III, CHAP. 5, P. 244, PL. 13
Reference (Deposit): CALIF. JOUR. MINES & GEOLOGY, V. 37, NO. 3, JULY 1941, P. 444