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

Group

Past Producer in Tuolumne county in California, United States with commodities Gold, Lead
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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. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Land status
  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 10077961
MRDS ID W026047
Record type Site
Current site name Group

Geographic coordinates

Geographic coordinates: -120.25682, 37.81992 (WGS84)
Elevation 914
Relative position AT BIG OAK

Site location context

Political divisions (FIPS codes)

Tuolumne(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Moccasin(quadrangle 1:24,000 scale)

Oakdale(quadrangle 1:100,000 scale)

San Jose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Tuolumne(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Tuolumne

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 001S 016E 30 California

Commodities

Commodity Importance
Gold Primary
Lead Tertiary

Comments on the commodity information

  • ORE CONTAINS 1 PERCENT PYRITE AND SOME GALENA.

Materials information

Materials Type of material
Galena Ore
Gold Ore
Pyrite Ore

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate

Nearby scientific data

(1) -120.25682, 37.81992
ListMap

Economic information

Ore body information

  • General form LENSES
    Strike E
    Dip 36 N

Comments on the geologic information

  • GEOL.DESC: VEIN AVERAGES 5 FT. IN THICKNESS. MAIN SHAFT ON VEIN WITH QUARTZ DIORITE WALLS; WEST OF SHAFT QUARTZ VEIN IN SLATE. TWO VEINS ON PROPERTY BUT WORK LIMITED TO ONE.

Economic information about the deposit and operations

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

Land status

Ownership category Private

Workings at the site

  • Type of workings Underground
    Area 8.094HA

Comments on the workings information

  • 2 INCLINED SHAFTS AT 35 DEGREES 450 , 100 FT; ON MAIN SHAFT DRIFTS AT EVERY 100 FT LEVEL TO 600 FT.

Reference information

Bibliographic references

  • Deposit

    TUCKER, W.B., 1914 , TUOLUMNE COUNTY: CMB REPT. 14 , P. 155

General comments

Subject category Comment text
Deposit MINE COMPOSED OF MACK, WOODEN, LITTLE SISTERS, AND TWO BROTHERS CLAIMS. LATER TWO CLAIMS ALMOST 1 MILE NE OF MACK CLAIM, SEPARATED BY CHAMPION LODE QUARTZ MINE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1978 Albers, J.; Tatkin, T. 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.