The Norcross Mine is a chromium mine located in San Luis Obispo county, California at an elevation of 1,201 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: 1,201 Feet (366 Meters)
Commodity: Chromium
Lat, Long: 35.40361, -120.74306
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.
Norcross Mine MRDS details
Site Name
Primary: Norcross Mine
Commodity
Primary: Chromium
Location
State: California
County: San Luis Obispo
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
Type: Surface
Ownership
Owner Name: Henry C. Dalessi
Years: 1957 - 1958
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1915
Year Last Production: 1958
Discovery Method: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Pacific Mountain System
Physiographic Province: Pacific Border Province
Physiographic Section: California Coast Ranges
Physiographic Detail: Santa Lucia Range
Mineral Deposit Model
Not available
Orebody
Form: LENSE
Form: LENSE
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Serpentinization Of Dunite
Rocks
Not available
Analytical Data
Analytical Data: CONCENTRATES AVG. 45% CR2O3, 13.3% FE, CR TO FE RATIO 2.4.
Materials
Ore: Chromite
Comments
Comment (Location): LOCATED ON SW SLOPE OF SANTA LUCIA RANGE NEAR HEAD OF A BRANCH OF SAN BERNARDO CREEK. ; INFO FROM LAND.ST :(1975)
Comment (Commodity): LUMP ORE AVG. 43.6% CR2O3, 11% FE, CR TO FE RATIO 2.7
Comment (Development): NORCROSS MINE WAS OPERATED ONLY DURING THE TWO WORLD WARS AND THE 1950'S.
Comment (Deposit): NO ORE SEEN IN PLACE WHEN MINE WAS VISITED IN 1975.
Comment (Workings): WORKINGS CONSISTED (1975) OF A SERIES OF COAL ESCING OPEN PITS TRENDING W OF NS WITH A NUMBER OF SMALLER PITS AND WORKINGS SURROUNDING THE LARGER PIT
Comment (Geology): THE NORCROSS MINE IS LOCATED IN A MASSIVE LANDSLIDE BLOCK ALSO CONTAINING ULTRAMAFIC INTRUSIVES, MARINE SEDIMENTS OF THE MONTERY FM., AND GREENSTONE OF THE FRANCISCAN FM.
References
Reference (Deposit): STINSON, M.C., 1975, CDMG MINERAL PROPERTY REPORT, UNPUBLISHED
Reference (Production): STINSON, M.C., 1975
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.
