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Alameda

Past Producer in Tuolumne 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. 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 10077889
MRDS ID W025960
Record type Site
Current site name Alameda
Related records 10238648

Geographic coordinates

Geographic coordinates: -120.45933, 37.97241 (WGS84)
Elevation 427
Relative position 3 MILES N.W. OF JAMESTOWN, ABOUT 1 MILE N. OF THE RAWHIDE MINE

Site location context

Political divisions (FIPS codes)

Tuolumne(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Sonora(quadrangle 1:24,000 scale)

Oakdale(quadrangle 1:100,000 scale)

San Jose(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 Tuolumne

Public Land Survey System information

Meridian Township Range Section Fraction State
001N 014E 05 California

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore
Ankerite Gangue
Quartz Gangue

Host and associated rocks

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

Nearby scientific data

(1) -120.45933, 37.97241
ListMap

Economic information

Ore body information

  • Strike N 35 W
    Dip 65 NE
    Thickness 0.61M
    Length 243.84M
    Width 121.92M

Comments on the geologic information

  • GEOL.DESC: BOTH WALLS ARE SLATE; THIS CLAIM IS JUST NORTH OF WHERE THE SERPENTINE AND SLATE CONTACT TRENDS TOWARD THE WEST. AMPHIBOLITE SCHIST ALTERED FROM AN INTRUSIVE DIKE OCCURS AT THIS CONTACT. ORE ON CLAIM IS FROM QUARTZ VEIN MATERIAL CONTAINING TALC, MAGNESITE AND MARIPOSITE (?). FOOTWALL IS INTERSECTED BY NUMEROUS VEINLETTS FORMING A NETWORK FOR TWO FEET. THE HANGING WALL CONTAINS QUARTZ STRINGERS IN A 10 FT. THICK TALC SCHIST ZONE NEAR SURFACE AND THIS ORE WIDENS TO 135 FT. AT THE 500 FT. LEVEL.

Economic information about the deposit and operations

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

Mining district

District name Mother Lode Belt

Land status

Ownership category Private

Workings at the site

  • Type of workings Underground
    Area 8.094HA

Comments on the workings information

  • INCLINED SHAFT 920 FT. WITH 3000 FT OF DRIFTS AND CROSSCUTS AT SIX LEVELS TO PROSPECT FOOTWALL AT NORTH END OF CLAIM. SOUTH INCLINED SHAFT 400 FT. WITH SEVERAL ADITS, THE LONGEST BEING 800 FT.

Reference information

Bibliographic references

  • Deposit

    FAIRBANKS, H.W., 1890 , GEOLOGY OF THE MOTHER LODE REGION: CMB REPT. 10 , P. 55

  • Deposit

    LOGAN, C.A., 1949 , MINES AND MIN. RES. OF TUOLUMNE COUNTY, CAL.: CDM REPT. 45 , P. 57

  • Deposit

    TUCKER, W.B., 1914 , TUOLUMNE COUNTY: CMB REPT. 14 , P. 136

  • Production

    LOGAN, C.A., 1949

General comments

Subject category Comment text
Deposit QUARTZ VEINLETTS IRREGULAR. AT SOUTH END OF CLAIM, LARGE QUARTZ BODY 18 INCHES TO 2 FT. THICK PROSPECTED TO INCLINED DEPTH OF 400 FT.

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.

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.