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Newton

Past Producer in Amador county in California, United States with commodities Copper, Silver, Gold, Lead, Zinc
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Mineral occurrence model information
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Land status
  16. Ownership information
  17. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10028080
MRDS ID M004880
Record type Site
Current site name Newton

Geographic coordinates

Geographic coordinates: -120.88713, 38.34157 (WGS84)
Elevation 183
Relative position 6 MILES WEST OF JACKSON

Site location context

Political divisions (FIPS codes)

Amador(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Ione(quadrangle 1:24,000 scale)

San Andreas(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Mokelumne(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Amador

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 006N 010E 28 California

Commodities

Commodity Importance
Copper Primary
Silver Secondary
Gold Secondary
Lead Secondary
Zinc Critical Secondary

Materials information

Materials Type of material
Chalcocite Ore
Chalcopyrite Ore
Galena Ore
Pyrite Ore
Sphalerite Ore
Calcite Gangue
Quartz Gangue
Sericite Gangue

Analytical data

Result ORE RANGES IN GRADE 1.25 - 21 % CU, LITTLE ZN AND PB, AU AND AG

Mineral occurrence model information

Model code 184
USGS model code 28a
Deposit model name Massive sulfide, kuroko
Mark3 model number 93

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metavolcanic Rock > Mafic Metamorphic Rock > Greenstone
  • Host or associated Host
    Rock type Metamorphic Rock > Schist

Nearby scientific data

(1) -120.88713, 38.34157
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Folds 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.

Ore body information

  • General form LENTICULAR
    Strike N 40 W
    Dip 70 NE
    Plunge 62 - 65
    Thickness 2.44M
    Length 140.21M

Controls for ore emplacement

  • Zone 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.

Comments on the geologic information

  • GEOL.DESC: THICK SERIES OF SCHISTS AND GREENSTONE OF LOW - RANK METAMORPHISM. GRADED BEDDING OBSERVED ON ROCKS DIPS STEEPLY EAST. CAPPING HIGHER, NEIGHBORING SAND, DIPPING WEST, - NO EVIDENCE OF DEFORMATION. THIS SEQUANCE LIES UNCONFORMABLY OVER OLDER ROCKS.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Large
Significant No
Discovery year 1863
Production years 1863 - 1946

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Dufrene (Estate), J. H. Lester

Comments on the production information

  • MINE WAS WORKED INTERMITTANTLY BETWEEN 1863 - 1946 - IT LAYED IDLED BETWEEN 1909 AND 1942 . SOME ZINC WAS PRODUCED BUT NOT RECORDED.

Workings at the site

  • Type of workings Underground
    Overall depth 167.64M

Comments on the workings information

  • EXTENSIVE WORKINGS

Reference information

Bibliographic references

  • Deposit

    GOODWIN, J. G., 1957 , LEAD AND ZINC IN CALIFORNIA; CALIF. JOUR. MINES AND GEOLOGY, VOL. 53 , NO. 394 , P. 420 .

  • Deposit

    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 .

  • Deposit

    FOLIO 11

  • Production

    HEYL AND ERIC, 1948 P. 51 , (SEE REF.)

General comments

Subject category Comment text
Deposit 1942 - 1943 U.S. BUREAU OF MINES PUT DOWN 5 DIAMOND DRILL HOLES TOTALING 4,258 FT. HOLE # 1 INTERSECTED THE 400 FT. LEVEL, # 2 ENCOUNTERED ORE, # 3 AND # 5 SHOWED ORE AT DEPTH, # 4 FAILED TO INTERSECT ORE, NORTH OF MAIN ORE BODY. GOOD INDICATIONS THAT THE BOTTOM OF THE SULFIDE LENS LIE CONSIDERABLY BELOW THE 550 FT. LEVEL OF THE MINE.
Deposit ORE BODY HAS MAXIMUM STRIKE LENGTH OF 460 FT., IT HAS BEEN MINED THROUGH A LENGTH DOWN - DIP OF ABOUT 600 FT. DRILLING HAS PROVED THAT THE ORE EXTENDS MORE THAN 800 FT. DOWN DIP FROM THE SURFACE. ORE BODY RAKES NORTHWARD, PITCH ANGLE CLOSE TO 77 DEG., PITCH LENGTH ABOUT 900 FT.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1972 Gere, W. U.S. Geological Survey
Updater 01-JUN-1978 Fraticelli, L. A. (Albers, J.) U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

External references

Maps centered on this site

Authoritative California resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.