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Carson Hill Gold Mining Co.

Past Producer in Calaveras county in California, United States with commodities Gold, Silver
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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. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Economic information about the deposit and operations
  14. Workings at the site
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10028998
MRDS ID M006313
Record type Site
Current site name Carson Hill Gold Mining Co.
Alternate or previous names Adelaide, Bright Star, Brown Calaveras, California Ophir, Enterprise, Extension, Finnegan, Independence, Iron Rock, Kentucky, Keystone, Last Chance, Melones, Mexican, Mineral Mountain, Morgan, New Year, Reserve, Releif, Santa Cruz, South Carolina, Stanislaus, Stephens, Union

Geographic coordinates

Geographic coordinates: -120.50267, 38.02185 (WGS84)
Elevation 518
Relative position 3 1/2 MI SE OF ANGELS CAMP

Site location context

Political divisions (FIPS codes)

Calaveras(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Angels Camp(quadrangle 1:24,000 scale)

San Andreas(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Stanislaus(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Calaveras

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 002N 013E 13,14,24 California

Commodities

Commodity Importance
Gold Primary
Silver Secondary

Comments on the commodity information

  • LARGE HANGING WALL, HIGH-GRADE ORE BODY MINED TO 4,550 FT DEPTH AVE 175 BY 15 FT ON BULL VEIN ORE BODIES AT 3000 FT LEVEL UNDER MORGAN AND MELONES CLAIMS, HANGING WALL ORE BODIES.

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Gold Ore
Pyrite Ore
Ankerite Gangue
Quartz Gangue
Talc Gangue

Alteration

  • (Local) Hydrothermal Altn In Area Causing Mariposite-Ankerite Rocks

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Gabbro
  • Host or associated Associated
    Rock type Metamorphic Rock > Phyllite
  • Host or associated Associated
    Rock type Metamorphic Rock > Schist
  • Host or associated Associated
    Rock type Metamorphic Rock > Amphibolite
  • Host or associated Associated
    Rock type Metamorphic Rock > Serpentinite
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Tuff
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Volcanic Breccia (Agglomerate)
  • Host or associated Host
    Rock type Metamorphic Rock > Schist

Nearby scientific data

(1) -120.50267, 38.02185
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Regional Strike Of Country Rock Nw Dips Ne Intense Folding & Faulting

Ore body information

  • General form PINCH & SWELL
    Strike NW
    Dip 60 NE
    Thickness 30.48M

Comments on the geologic information

  • AUGITE TUFF AND BRECCIA ARE COMMON COUNTY ROCKS ALSO, INTRUSIONS OF GABBRO AND SERPENTINE, TALC AND SERICITE SCHIST ALSO PRESENT. TWO PRINCIPAL VEIN SYSTEMS: CALAVERAS SYSTEM ON W. AND BULL SYSTEM ON E AVE VEIN 10 - 15 FT. MAIN COUNTRY ROCKS ALSO INCLUDE PHYLLITE, AMPHIBOLITE AND CHLORITIC SCHIST. VEINS INTERSECT BOTH TO N & S. BULL VEIN UP TO 40 FT & TO S. SPLITS INTO 2 VEINS WHICH CONVERGE WITH CALAVERAS; VEIN IS OF COARSE WHITE QUARTZ WITH CHLORITE RIBBON STRUCTURES. FIVE FLAT ORE VEINS PRESENT W 20 - 30 DEG DIP NE. ORE HOSTED IN TALCOSE AND PYRITIC SCHIST. LARGE MASSES OF ANKERITE AND MARIPOSITE.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Comments on the production information

  • ONE BLAST WAS REPORTED TO BRING DOWN $110,000 OF GOLD. NEAR BY $3,000,000 TAKEN FROM MORGAN CLAIM IN LESS THAN 2 YEARS. LARGE ORE BODY TO 4550 FT DEPTH YIELDED $5,000,000

Workings at the site

  • Type of workings Surface/Underground
    Area 355.327HA
    Overall depth 1386.84M

Comments on the workings information

  • BY 1865 MINE DEVELOPED TO 250 FT DEPTH, 400 FT LENGTH SEVERAL CLAIMS, EXTENSIVE UNDERGROUND WORKINGS. GLORY HOLE, WINZES; NUMEROUS LEVELS & VERY EXTENSIVE UNDERGROUND WORKINGS, SHRINKAGE STOPING ORE REMOVAL

Reference information

Bibliographic references

  • Deposit

    CLARK, W.B., LYDON, P.A., 1962 , MINES AND MINERAL RESOURCES OF CALAVERAS COUNTY, CALIF.; COUNTY REPORT 2 ; CALIF. DIV. OF MINES AND GEOLOGY, P 44 - 50 , 143

  • Deposit

    LOGAN, C.A., FRANKE, H., 1936 , MINES AND MINERAL RESOURCES OF CALAVERAS COUNTY; CALIF. JOUR. MINES AND GEOLOGY, VOL. 32 , NO. 3 ; DIV. OF MINES, P. 300

  • Production

    CLARK ( 1962 )

General comments

Subject category Comment text
Deposit VEINS, TWO PRINCIPAL VEIN SYSTEMS: CALAVERAS SYSTEM ON WEST AND BULL SYSTEM ON E VEIN AVE 10 - 15 FT. VEIN INTERSECTS BOTH TO N & S (SEE ALSO GEOL COMMENTS)
Deposit STRINGERS OF GOLD FREQUENTLY CUT OUT WITH COLD CHISELS IN EARLY WORKINGS. LARGEST LODE GOLD SOURCE IN COUNTRY. ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1979 Mateik, R.; Albers, John P. 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.