The North Fork Chrome Mine is a chromium mine located in Placer county, California at an elevation of 3,481 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: 3,481 Feet (1,061 Meters)
Commodity: Chromium
Lat, Long: 39.16139, -120.78611
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.
North Fork Chrome Mine MRDS details
Site Name
Primary: North Fork Chrome Mine
Commodity
Primary: Chromium
Location
State: California
County: Placer
District: Foresthill Divide Area
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
Owner Name: U.S. Government
Owner Name: H. A. And C. A. Geisen Dorfer
Years: 1940 - 1943
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Pacific Mountain System
Physiographic Province: Cascade-Sierra Mountains
Physiographic Section: Sierra Nevada
Mineral Deposit Model
Not available
Orebody
Form: IRREGULAR
Structure
Type: L
Description: Peridotite Fractured By Two Prominent Sets Of Joints, Clearing The Rock Mass Into Roughly Rectangular Boulders
Alterations
Alteration Type: L
Alteration Text: Complete Serpentinization Of Dunite
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Chromite
Comments
Comment (Geology): DEPOSIT LOCATED IN A LINEAR MASS OF ULTRAMAFIC ROCKS THAT HAS INTRODED A SEQUENCE OF PALEOZOIC META MOROHICS OF THE CALAVERAS GROUP. THE EASTERN CONTACT OF THE ULTRAMAFICS IS COLLINEAR WITH AND PROBABLY PART OF THE MELONES FAULT ZONE.
Comment (Location): MINE LOCATED ON A STEEP EAST FACING SLOPE OF A NORTH TRENDING RIDGE OF FOREST HILL DIVIDE. FOREST HILL DIVIDE SEPARATES GIANT GAP GULCH FROM MC IN TYRE GULCH.
Comment (Production): 1ST PRODUCTION FIGURE ABOVE MINED IN 1918 BUT NOT SHIPPED UNTIL 1940.
Comment (Deposit): DEPOSIT CONTAINED BETWEEN 20-60% CR2O3
Comment (Workings): WORKINGS CONSISTED OF ON OPEN CUT 15 FT LONG AND 15 FT DEEP (1953). ALL WORKINGS OBLITERATED BY A BULLDOZER AS OF 1975
References
Reference (Deposit): RYNEARSON, G.A., 1953, CDMG BULL 134, PT. 3, CHAPT. 5, P. 207, 208, 311
Reference (Deposit): STINSON, M.C., 1975, CDMG MINERAL PROPERTY REPORT, UNPUBLISHED.
Reference (Production): CDMG BULL 134, PT. 3, CHAPT. 5, P. 208
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.
