The Copperopolis Area is a 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.
Copperopolis Area MRDS details
Site Name
Primary: Copperopolis Area
Commodity
Tertiary: Cobalt
Tertiary: Nickel
Location
State: California
County: Calaveras
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Owner Name: Open Land
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Discovery Year: 1954
Years of Production:
Organization:
Significant: N
Physiography
General Physiographic Area: Pacific Mountain System
Physiographic Province: Cascade-Sierra Mountains
Physiographic Section: Sierra Nevada
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Name: Serpentinite
Role: Host
Age Type: Host Rock
Age Young: Late Cretaceous
Analytical Data
Analytical Data: SAMPLES ASSAYED BETWEEN 0.14 AND 9.42 PERCENT NICKEL OXIDE, WITH THE AVERAGE OF 1.0 PERCENT. AVERAGE 0.006 PERCENT COBALT
Materials
Ore: Chrysoprase
Ore: Garnierite
Comments
Comment (Location): LOCATED IN 5 1/2 SECTION 16
Comment (Geology): GEOL.DESC: 320 ACRES OF NICKEL-BEARING LATERITES ARE ON TOP OF SERPENTINES. THIS MANTLE OF LATERITE CONSISTS OF SILICIFIED ZONE, WHICH IS S. EXTENSION OF SERPENTINE BELT OF VALLEY SPRINGS AREA, AND WHICH OCCURS AS ONLY SMALL REMNANTS OF PRESERVED MANTLE. GARNIERITE AND CHRYSOPRASE ARE THE COMMON NICKEL-BEARING LATERITES ON TOP OF SERPENTINES, AND OCCUR AS VEINS. THE BASE OF MANTLE IS AVERAGE ELEVATION OF 1150 FT. THE LATERITE IS 20 TO 80 FT. THICK, AVERAGING 30 FT. THICK. AREA IS UNDERLAIN PRINCIPALLY BY METAVOLCANIC ROCKS OF LOGTOWN RIDGE FORMATION (JURASSIC), AND SERPENTINITE, WITH SMALL ISOLATED PATCHES OF TABLE MOUNTAIN LATITE (PLIOCENE)
References
Reference (Deposit): TALIAFERRO, N.L. AND A.J. SOLARI, 1948 , GEOLOGIC MAP OF THE COPPEROPOLIS QUAD, CALIF: CALIF. D.O.M.
Reference (Deposit): CLEVELAND, G., 1954 ( 1974 ), PRIVATE COMMUNICATION
Reference (Deposit): CLARK, W.B. AND P.A. LYDON, 1962 , CALIF. DIV. OF MINES AND GEOL., COUNTY REPT. 2
Reference (Deposit): CHESTERMAN, C.W., 1976 , WRITTEN COMMUNICATION
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.
