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  3. Mineral Resource Data System (MRDS)

Bonanza

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. 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 10077925
MRDS ID W026005
Record type Site
Current site name Bonanza
Related records 10141573

Geographic coordinates

Geographic coordinates: -120.38489, 37.98547 (WGS84)
Elevation 549
Relative position LOCATED IN THE TOWN OF SONORA

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 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
002N 014E 36 California

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone

Nearby scientific data

(1) -120.38489, 37.98547
ListMap

Economic information

Ore body information

  • Strike N 30 E
    Dip 23 E
    Thickness 0.61M

Comments on the geologic information

  • GEOL.DESC: DIORITE PORPHYRY DIKE ACCOMPANIES QUARTZ VEIN, SITUATED BETWEEN A LIMESTONE FOOTWALL AND A MICA SCHIST HANGING WALL. VEIN IS LOCATED ADJACENT TO HANGING WALL AND RANGES FROM 18 INCHES TO 2 FT. IN THICKNESS.

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 5.666HA

Comments on the workings information

  • 70 DEGREE INCLINED SHAFT 183 FT., THEN ON 23 DEGREE INCLINE THE SHAFT WAS EXTENDED 600 FT. ON THE VEIN; DRIFT AT BASE 100 FT., WITH WINZE 800 FT. ON VEIN.

Reference information

Bibliographic references

  • Deposit

    LOGAN, C.A., 1949 , MINES AND MIN. RES. OF TULUMNE COUNTY: CDMG REPT. 45 , P. 60

  • Deposit

    TUCKER, W.B., 1914 , TUOLUMNE COUNTY: CMB REPT. 14 , P. 141

  • Production

    LOGAN, C.A., 1949

General comments

Subject category Comment text
Deposit POCKETS IN QUARTZ VEIN
Deposit NO OTHER INFORMATION FOUND.

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.