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Gold Knoll

Past Producer in Calaveras county in California, United States with commodity Gold
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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. Ore body information
  12. Economic information about the deposit and operations
  13. Workings at the site
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10028810
MRDS ID M006024
Record type Site
Current site name Gold Knoll
Alternate or previous names Wilbur Womble
Related records 10162716

Geographic coordinates

Geographic coordinates: -120.67795, 37.98713 (WGS84)
Elevation 305
Relative position 2 MI W OF COPPEROPOLIS

Site location context

Political divisions (FIPS codes)

Calaveras(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Copperopolis(quadrangle 1:24,000 scale)

Oakdale(quadrangle 1:100,000 scale)

San Jose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower San Joaquin River(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 012E 32 California

Comments on the location information

  • UTM ACC, N 1/2 SEC

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore
Quartz Gangue

Alteration

  • (Local) Ore Body Oxidized In Places

Analytical data

Result ORE REPORTED TO BE $1.25 PER TON AU ON E VEIN

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate

Nearby scientific data

(1) -120.67795, 37.98713
ListMap

Economic information

Ore body information

  • Strike NW
    Dip 45 NE
    Thickness 7.92M

Comments on the geologic information

  • MARIPOSA SLATE IS COUNTRY ROCK AND SERPENTINE LIES TO E AT 115 LEVEL SLATE IS BADLY CRUMPLED, WITH COMPLETELY ALTERED DIKE

Economic information about the deposit and operations

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

Comments on the production information

  • ACTIVE 1925 - 1927 , 1930'S , 1942 - 1943 , 1953

Workings at the site

  • Type of workings Underground
    Overall depth 91.44M

Comments on the workings information

  • DEVELOPED BY 300 FT INCLINED SHAFT ON W VEIN WITH LEVELS AT 50 , 115 AND 300 FT, A CROSSCUT ADIT CONNECTS WITH 50 FT LEVEL WITH ADIT PORTAL 200 FT W. OF SHAFT MOST WORKING ARE NW OF SHAFT, 1000 FT DRIFT ON 300 FT LEVEL WITH 3 CROSSCUTS TO E VEIN

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 56 , 154 AND PL B

  • Deposit

    LOGAN, C. A., 1925 , SACRAMENTO FIELD DIVISION - CALAVERAS CO.: CALIF. MIN. BUREAU, REPT. 21ST STATE MINERALOGIST, P. 153 - 154

  • 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 260 - 261

General comments

Subject category Comment text
Deposit VEINS, TWO QTZ VEINS APPROX. 200 FT APART, MAIN OR W VEIN AND E OR MILLER VEIN. VEINS ARE PARALLEL AND FROM A FEW FT TO 26 FT THICK E VEIN AT 100 FT LEVEL. IMMEDIATE HANGING WALL AT 115 LEVEL IS ALTED DIKE.

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.