The Napoleon is a copper mine located in Calaveras 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.
Napoleon MRDS details
Site Name
Primary: Napoleon
Commodity
Primary: Copper
Secondary: Gold
Secondary: Silver
Secondary: Zinc
Location
State: California
County: Calaveras
Land Status
Not available
Holdings
Not available
Workings
Type: Underground
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Deposit Type: Replacement
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: L
Physiography
General Physiographic Area: Pacific Mountain System
Physiographic Province: Pacific Border Province
Physiographic Section: California Trough
Mineral Deposit Model
Not available
Orebody
Form: LENTICULAR/IRREGULAR
Structure
Type: L
Description: Shear Zone Strikes N 75 W Dips 65 - 75 Se
Alterations
Alteration Type: L
Alteration Text: Sericitization
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Sphalerite
Ore: Chalcopyrite
Ore: Pyrite
Ore: Galena
Gangue: Calcite
Gangue: Barite
Gangue: Quartz
Comments
Comment (Production): NO PRODUCTION VALUES; DISCOVERED 1860 BY 1927 REPORTED PRODUCTION OF $1.2 MILLION OF CU AND AG. IN 1881 , 1600 TONS WAS SHIPPED, IT AVERAGED 11.25 % CU .26 OZ AU, AND 5.7 OZ AG. CEMENT COPPER WAS PRODUCED 1900 - 1915 . ZINC PRODUCTION UNDETERMINED.
Comment (Deposit): 3 ORE BODIES, LARGEST IS THE DISCOVERY, THE OTHER TWO, LOCATED BETWEEN 250 - 375 FT. LEVELS. THESE LENSES HAD AN EASTWARD PITCH OF 65 - 70 DEGREES.
Comment (Workings): THREE SHAFTS - TWO ARE CAVED;FOUR MAIN LEVELS 100 , 250 , 300 , 375 FT. 1942 - 43 MOUNTAIN COPPER CO., LTD, REHABILITATED THE 3RD SHAFT 280 FT. DEEP AND DRILLED 10 TEST HOLES ON 250 FT. LEVEL.
Comment (Geology): GEOL.DESC: ROCKS IN VICINITY OF THE MINE CONSISTS OF ANDESITIC LAVAS WHICH ARE APHANTIC IN SOME PLACES VESICULAR OR AMYGDALOIDAL. THESE VOLCANIC ROCKS HAVE UNDERGONE LOW-GRADE METAMORPHISM TO GREENSTONES AND GREEN SCHISTS. MINE AREA IS A SHEAR ZONE 6 - 30 FT. WIDE IN QUARTZ PORPHYRY AND FELSITE.
References
Reference (Deposit): GOODWIN, J.G., 1957 , LEAD AND ZINC IN CALIFORNIA; CALIF. JOUR. MINES AND GEOLOGY, VOL. 53 , NO. 354 , P. 433 .
Reference (Deposit): HEYL, G.R., 1948 , ZINC-COPPER MINES OF THE QUAIL HILL AREA, CALAVERAS, CALIFORNIA; COPPER IN CALIFORNIA BULL. 144 ; DIV. OF MINES, P. 122 - 124
Reference (Deposit): CLARK,W.B. AND LYDON,P.A., 1962,MINES AND MINERAL RESOURCES OF CALAVERAS COUNTY, CALIFORNIA; COUNTY REPT. 2 , CALIF. DIV. MINES AND GEOLOGY, P. 27 .
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.
