The Negrohead is a chromium mine located in San Luis Obispo county, California.
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
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.
Negrohead MRDS details
Site Name
Primary: Negrohead
Secondary: Blackhead Claim
Secondary: Niggerhead
Commodity
Primary: Chromium
Location
State: California
County: San Luis Obispo
District: Cerro Alto-Cuesta Pass 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
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Surface
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
Mineral Deposit Model
Not available
Orebody
Form: LENSE
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Chromite
Comments
Comment (Commodity): High Grade Ore
Comment (Production): Production Was Less Than 150 Long Tons Of Ore
Comment (Workings): Workings Consist Of Open Cuts Extending 200 Ft At N55w That Were Mined To A Depth Of 10-20 Ft.
Comment (Names): The original site name contained a derogatory word that has been changed according to Department of the Interior policy outlined at http://geonames.usgs.gov/docs/pro_pol_pro.pdf. See Chap. 3, Policy V. The revised form of the name now appears in the permanent record as the "Current" or preferred site name, and the prior, derogatory name is labeled "Previous".
Comment (General): Doug Causey - Deleted DEP_ID 10262682, a duplicate record from MAS database. There were a few minor additions of information from that record, but basically this was a more complete description of the property.
References
Reference (Deposit): ALLEN, J.E., 1941, GEOL. INVESTIGATIONS OF CHROMITE DEPOSITS OF CALIF.: CALIF. JOURNAL OF MINES AND GEOLOGY, VOL 37, P. 162.
Reference (Deposit): WALKER, G.W. AND GRIGGS, A.B., 1953, GEOL. INVESTIGATIONS OF CHROMITE IN CALIF.: CALIF. DIVISION OF MINES BULLETIN 134, PART II, CHAPT. 2, P. 83.
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.
