The Greenback is a copper mine located in Kern 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
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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.
Greenback MRDS details
Site Name
Primary: Greenback
Secondary: Weringer
Commodity
Primary: Copper
Secondary: Silver
Location
State: California
County: Kern
Land Status
Not available
Holdings
Not available
Workings
Type: Surface/Underground
Ownership
Not available
Production
Year: 1900
Time Period: 1890 - 1900
Material type: ORE
Description: Cp_Grade: ^19.4 % Cu, 5.7 Oz. Ag/Ton
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: M
Physiography
General Physiographic Area: Pacific Mountain System
Physiographic Province: Cascade-Sierra Mountains
Physiographic Section: Sierra Nevada
Mineral Deposit Model
Not available
Orebody
Form: LENTICULAR
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Malachite
Ore: Chalcocite
Comments
Comment (Deposit): 6 VEINS, PRINCIPAL COPPER VEIN IS 5 FT. WIDE, STRIKES N 5 E AND DIPS VERTICALLY. NEAR-SURFACE EVIDENCE IT APPEARS THAT AN ORE SHOOT WAS FORMED AT THE INTERSECTION OF THE 5 FT. VEIN AND SHEETED ZONE 6 FT. WIDE, STRIKES N 70 E, DIP VARIES FROM 42 - 60 NW. LIMONITE GOSSAN 16 INCHES THICK OCCURS ALONG THE HANGING WALL OF THE SHEETED ZONE.
Comment (Workings): 200 FT. SINGLE-COMPARTMENT INCLINED SHAFT WITH LEVELS DRIVEN NW AT 95 , 135 AND 185 FT. DEPTHS. 250 FT. NORTH OF INCLINED SHAFT, TWO VERTICAL SHAFTS SUNK ON CONTINUATION OF SAME (?) VEIN, ONE SHAFT 240 FT. DEEP WITH LEVELS AT 100 , 140 AND 200 FT. A 200 FT. WINZE WAS SUNK IN THE MAIN ORE SHOOT AT AN INCLINATION OF 45 DEG. FROM 200 LEVEL. OTHER WORKINGS INCLUDE FIVE SMALL PROSPECT PITS AND A CAVED ADIT.
Comment (Location): NE 1/4 SEC. 3 , NW 1/4 SEC. 2 , UTM EST
Comment (Production): MILL ORE RANGED FROM 2 - 8 % CU, AND 2 OZ. AG/TON NO MINING DONE SINCE 1918 .
Comment (Commodity): MASSIVE SULFIDE ORE ON DUMP IS PRIMARLY COMPOSED OF CHALCOPYRITE WITH MINOR PYRITE CUT BY VEINLETS OF SOOTY CHALCOCITE.
Comment (Geology): GEOL.DESC: AREA IS UNDERLAIN BY BIOTITE-HORNBLENDE GRANODIORITE WHICH CONTAINS INCONSPICUOUS QUARTZ VEINS AND NARROW APLITE DIKES. BOTH APLITE DIKES AND VEINS ARE CUT AND DISPLACED ALONG MINERALIZED SHEARS. SHEETED ZONE IS PARALLEL TO JOINT SYSTEMS IN THE GRANODIORITE. BOTH WALLS OF THE 5 FT. VEIN ARE MARKED BY SLICKENSIDED SURFACES WITH SPARE MINERALIZATION EXTENDING INTO THE WALL ROCK.
References
Reference (Production): TROXEL AND MORTON, 1962
Reference (Deposit): TROXEL, B.W. AND MORTON, P.K., 1962 , MINES AND MINERAL RESOURCES OF KERN COUNTY; CA; COUNTY REPT. 1 ; CA. DIV. MINES AND GEOLOGY, P. 84 - 90
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.
