The Francho Copper is a copper mine located in Imperial 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.
Name: Francho Copper
Lat, Long: 33.05361, -114.81444
Map: View on Google Maps
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.
Francho Copper MRDS details
Primary: Francho Copper
Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
General Physiographic Area: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Salton Trough
Mineral Deposit Model
Analytical Data: FOUR SAMPLES AVERAGE 2.4% CU FOR MINERALIZED ZONE.
Comment (Deposit): 10 FT MINERALIZED ZONE IN SEC. 12 , ANOTHER VEIN 500 FT WEST OF BULLDOZER CUTS IS CONTAINED IN AN 8 FT SHEAR ZONE WHICH APPEARS TO TREND N25W, DIPS STEEPLY NE, HOST ROCK THERE IS A GRAY PHYLLITE. THERE IS EVIDENCE OF OTHER VEINS BENEATH BASALT DEBRIS THROUGH FLOAT MATERIAL. ZONE CONSISTS OF IRREGULAR VEINS OF QUARTZ AND COPPER OXIDES.
Comment (Workings): 15 DEGREE INCLINED CUT 200 FT LONG BY 10 FT WIDE BY 3 FT DEEP: A PIT 100 FT IN DIAMETER HAS MAXIMUM DEPTH OF 10 FT, SEVERAL SMALLER CUTS.
Comment (Geology): ONE QUARTZ VEIN CONTAINS FINE-GRAINED BLACK TOURMALINE. ; GEOL.DESC: NARROW DIKES OF ACIDIC TO INTERMEDIATE COMPOSITION WHICH INTRUDE A METAMORPHIC UNIT COMPOSED OF META-ANDESITE, PHYLLITE, AND META-CONGLOMERATE, METAMORPHIC UNIT IS THINLY OVERLAIN BY A GENTLY TILTED PLIOCENE (?) BASALT FLOW.
Reference (Deposit): MORTON, P.K., 1977, GEOLOGY AND MINERAL RESOURCES OF IMPERIAL COUNTY, CALIFORNIA, COUNTY REPORT 7: CALIFORNIA DIVISION OF MINES AND GEOLOGY, P. 37
Reference (Other Database): CIMRI
"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 at Where to Find Gold in California.