Commodities
PrimaryCopper
SecondarySilver, Gold, Lead, Zinc
Commodity typeM
Deposit
Model184: Massive sulfide, kuroko
Deposit sizeS
WorkingsUnderground
Orebody formLENTICULAR
Ore controlZone Of Structual Disturbance Found Where East Dipping Foliation Lies Adjacent To West Dipping Foilation. This Zone Extents Through Newton Mine. Due To Lack Of Lithologic Correlation Across Strike, This Zone Is More Suggestive Of Fault Along The Axial Plane Of An Isoclinal Fold, Than A Zone Of Stretching And Displacement In An Over - Turned Limb Of A Major Anticline.
Materials
Ore mineralsChalcocite, Chalcopyrite, Galena, Pyrite, Sphalerite
GangueCalcite, Quartz, Sericite
Geology
Host rockGreenstone,Schist
StructureFolds Having Amplitudes And Wave Lengths Ranging 1 - 10 Ft. System Of Cross - Faults Show Apparent Strike - Slip Displacements Of 20 Ft. These Faults Displace The Ore Body, Slickensides Were Observed With A Low Pitch. One Post - Ore Reverse Fault On The 200 Ft. Level, It Dips 55 - 60 W, Net Slip Parallel To Dip.
Economic & production
Development statusPast Producer
Production years1863 - 1946
Discovery year1863
Identification
Deposit ID10028080
MRDS IDM004880
RegionNA
Data scoreB
Coordinates38.34157, -120.88713
References
GOODWIN, J. G., 1957 , LEAD AND ZINC IN CALIFORNIA; CALIF. JOUR. MINES AND GEOLOGY, VOL. 53 , NO. 394 , P. 420 .HEYL, G. R., AND ERIC, J. H., 1948 , NEWTON COPPER MINE, AMADOR COUNTY, CALIFORNIA, COPPER IN CALIFORNIA BULL. 144 ; DIV. OF MINES, P. 49 - 59 .FOLIO 11HEYL AND ERIC, 1948 P. 51 , (SEE REF.)