1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Thorpe Mine

Past Producer in Calaveras county in California, United States with commodity Gold
Map
XML
JSON
KML
B
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. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Workings at the site
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10028769
MRDS ID M005956
Record type Site
Current site name Thorpe Mine
Related records 10211736

Geographic coordinates

Geographic coordinates: -120.62434, 38.20797 (WGS84)
Elevation 335
Relative position 6 MI. S OF MOKELUMNE HILL

Site location context

Political divisions (FIPS codes)

Calaveras(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Calaveritas(quadrangle 1:24,000 scale)

San Andreas(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Calaveras(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 003N 012E 11 California

Comments on the location information

  • UTM EST. SW 1/4 JUST W OF HWY 49

Commodities

Commodity Importance
Gold Primary

Comments on the commodity information

  • ORE MOSTLY AT INTERSECTION OF MAIN AND MINOR FISSURING. LEVELS SHOW FAIR VALUES

Materials information

Materials Type of material
Gold Ore
Pyrite Ore
Ankerite Gangue
Calcite Gangue
Quartz Gangue

Analytical data

Result 3 % SULFIDES

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate
  • Host or associated Host
    Rock type Metamorphic Rock > Phyllite
  • Host or associated Host
    Rock type Metamorphic Rock > Schist
  • Host or associated Host
    Rock type Metamorphic Rock > Amphibolite

Nearby scientific data

(1) -120.62434, 38.20797
ListMap

Economic information

Ore body information

  • Strike N 60 W
    Dip 53 NE
    Thickness 15.24M

Comments on the geologic information

  • ZONE OF PARALLEL QTZ VEINS AND STRINGERS IN AMPHIBOLITE AND CHLORITE SCHIST. SMALL AMOUNTS OF TALC & SERICITE SCHIST ADJACENT. PHYLLITE AND SLATE TO THE WEST. THICKNESS OF 3 MAIN VEINS AVE 15 FT BUT REACHES 50 FT. VEINS ARE MOSTLY IN SCHIST

Economic information about the deposit and operations

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

Comments on the production information

  • WORKED IN SMALL WAY BEFORE 1894; PRODUCED A FEW THOUSAND DOLLARS IN 1895

Workings at the site

  • Type of workings Underground
    Overall depth 194.16M

Comments on the workings information

  • 700 FT MAIN SHAFT AT 55 DEG, FLOODED. STOPING ON 300-, 400-, AND 500-FT LEVEL. ALSO 600 FT LEVEL.

Reference information

Bibliographic references

  • Deposit

    CLARK, W. B., & LYDON, P. A., 1962 , MINES AND MINERAL RESOURCES OF CALAVERAS COUNTY, CALIF.: CALIF. DIV. MINES & GEOL., COUNTY REPORT 2, P. 70 - 71, 184 & PL B

  • Deposit

    LOGAN, C. A., FRANKE, H., 1936 , MINES AND MINERAL RESOURCES OF CALAVERAS CO.: CDM CALIF. JOUR. MINES & GEOL., VOL. 32, P. 320

  • Deposit

    TUCKER, W. B., 1916 , CALAVERAS COUNTY: CALIF. JOUR. MINES & GEOL., 14TH REPORT STATE MINERALOGIST, P. 121

  • Deposit

    CRAWFORD, J. J., 1896 , CALAVERAS COUNTRY: CALIF. MIN. BUR. 13TH REPORT STATE MINERALOGIST, P. 121

  • Production

    CLARK, 1962

General comments

Subject category Comment text
Deposit VEINS

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1979 Hayden, F. (Albers, J.) U.S. Geological Survey

Beyond USGS

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

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.