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United Mines Group

Past Producer in Tuolumne county in California, United States with commodities Gold, Lead, Iron
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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. Mining district
  13. Land status
  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 10077966
MRDS ID W026056
Record type Site
Current site name United Mines Group
Alternate or previous names Grizzly Et Al
Related records 10165858

Geographic coordinates

Geographic coordinates: -120.2235, 37.97742 (WGS84)
Elevation 899
Relative position 2 MILES N.E. OF TUOLUMNE, IN THE OT THE N. FORK OF THE TUOLUMNE RIVER.

Site location context

Political divisions (FIPS codes)

Tuolumne(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Tuolumne(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 001N 016E 09,04 California

Commodities

Commodity Importance
Gold Primary
Lead Tertiary
Iron Tertiary

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) -120.2235, 37.97742
ListMap

Economic information

Ore body information

  • Strike N 45 W
    Dip 50 NE
    Thickness 1.52M

Comments on the geologic information

  • GEOL.DESC: FOOTWALL IS SLATE, HANGING WALL IS GRANODIORITE

Economic information about the deposit and operations

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

Mining district

District name East Lode

Land status

Ownership category Private

Workings at the site

  • Type of workings Underground
    Area 68.394HA

Comments on the workings information

  • DEAD HORSE SHAFT 1700 FT. ON VEIN; LADY WASHINGTON CROSSCUT ADIT 2400 FT. WITH DRIFTS 900 FT.

Reference information

Bibliographic references

  • Deposit

    LOGAN, C.A., 1920 , AURBURN FIELD DIV., TUOLUMNE COUNTY: CMB REPT. 17 , P. 483 - 484

  • Deposit

    TUCKER, W.B., TUOLUMNE COUNTY: CMB REPT. 14 , P. 164 - 165

General comments

Subject category Comment text
Deposit ORE FORMS IN LENSES AT INTERSECTION WHERE DIKES CROSS VEINS.
Deposit THIS GROUP INCLUDES SEVERAL CLAIMS AS FOLLOWS: EUREKA, DEAD HORSE, LADY WASHINGTON, GRIZZLY, NEW ALBANY, AND NINE OTHER CLAIMS. PROPERTY WORKED AT INTERVALS. LAST ORE MILLED IN 1914 .

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.