The Number Fire Group is a chromium mine located in Stanislaus county, California at an elevation of 1,401 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: 1,401 Feet (427 Meters)
Commodity: Chromium
Lat, Long: 37.41111, -121.40667
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.
Number Fire Group MRDS details
Site Name
Primary: Number Fire Group
Commodity
Primary: Chromium
Location
State: California
County: Stanislaus
District: Del Puerto Area
Land Status
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 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: Higuera, Larry
Home Office: P.O. Box 1147, Patterson, Ca. 95363 (209) 892-5592
Years: 1975 -
Owner Name: West Coast Chrome Co.
Years: 1940 -
Production
Year: 1940
Time Period: 1918-1940'S
Material type: CON
Description: Cp_Grade: ^51% Cr2o3
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1918
Year Last Production: 1945
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: Diablo Range
Mineral Deposit Model
Not available
Orebody
Form: POD, IRREGULAR
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Serpentinization Of Dunite
Rocks
Name: Dunite
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Jurassic
Analytical Data
Analytical Data: CR/FE 2.41
Analytical Data: 16.36% FE
Analytical Data: CONCENTRATES: 57.62% CR2O3
Analytical Data: GRAB SAMPLE: CRUDE ORE 53% CR2O3
Materials
Ore: Chromite
Comments
Comment (Workings): DEPOSIT MINED BY BOTH OPEN CUT, TUNNELS AND STOPES. BLOCK OF GRANDCONTAINING THE MAIN WORKINGS OF NO. 5 GROUP HAS SLID INTO THE CANYON.
Comment (Deposit): HIGH GRADE ORE FORMED A LEDGE; BELOW IT WAS A DISSEMINATED ORE ZONE
Comment (Location): LOCATED APPROX. 300 M EAST OF JUNCTION OF ADOBE AND DEL PUERTA CANYONS
Comment (Geology): CHROMITE DEPOSITS OCCUR IN AN ULTRAMAFIC BODY THAT TRENDS N 70 W, IS 8 MILES LONG AND 1.5 MILES WIDE. THE ULTRAMAFIC BODY IS INTRUSIVE INTO THE UPPER PART OF EXPOSED FRANCISCAN SECTION.
References
Reference (Deposit): STINSON, M.C., 1975, CDMG MINERAL PROPERTY REPORT, UNPUBLISHED.
Reference (Production): CDMG MINERAL PROPERTY REPORT, UNPUBLISHED
Reference (Deposit): WALKER, G.W. AND GRIGGS, A.B., 1953, GEOL. INVESTIGATIONS OF CHROMITE IN CALIF.: CDMG BULL 134, PART II, CHAPT. 2, P. 76.
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.
