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Mocking Bird

Past Producer in Mariposa 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. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Mining district
  14. Ownership information
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10031128
MRDS ID M009722
Record type Site
Current site name Mocking Bird
Alternate or previous names Talc, Lacy
Related records 10114883

Geographic coordinates

Geographic coordinates: -119.96459, 37.5516 (WGS84)
Elevation 823
Relative position 1 MI. S. OF COLORADO SCHOOL.

Site location context

Political divisions (FIPS codes)

Mariposa(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Feliciana Mountain(quadrangle 1:24,000 scale)

Yosemite Valley(quadrangle 1:100,000 scale)

Mariposa(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Merced(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Mariposa

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 004S 018E 27 California

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore
Chlorite Gangue
Clay Gangue
Quartz Gangue
Talc Gangue

Alteration

  • (Local) Talc Chlorite Clay Altered Greenstone Dike

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate
  • Host or associated Host
    Rock type Metamorphic Rock > Metavolcanic Rock > Mafic Metamorphic Rock > Greenstone

Nearby scientific data

(1) -119.96459, 37.5516
ListMap

Economic information

Ore body information

  • Strike N 40 - 45 W
    Dip 90
    Depth to top 0M

Comments on the geologic information

  • GEOL.DESC: GOLD OCCURS AT THE BORDER OF A NEARLY VERTICAL, CHLORITIC, ALTERED GREENSTONE DIKE WHERE GENTLY DIPPING QUARTZ STRINGERS CUTTING THE DIKE CUT THE SLATE WALL-ROCKS. ALTERED DIKE AVERAGES 3 FT. THICK, QUARTZ STRINGERS ARE A FRACTION OF AN INCH TO SEVERAL INCHES THICK.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1890
Production years 1890'S - 1920

Mining district

District name Colorado

Ownership information

  • Type Operator
    Owner David W. And Maxie S. Dukes

Comments on the production information

  • NO OTHER PRODUCTION RECORD FOUND.

Workings at the site

  • Type of workings Underground
    Overall depth 30.48M

Comments on the workings information

  • 1 SHAFT WITH DRIFTS AND A TUNNEL SEVERAL HUNDRED FEET LONG.

Reference information

Bibliographic references

  • Deposit

    BOWEN, O. E., JR., GRAY, C. H., JR., 1957 , MINES AND MINERAL DEPOSITS OF MARIPOSA COUNTY, CALIFORNIA: CALIF. JOUR. MINES AND GEOLOGY, V. 53 , NOS. 1 AND 2 , P. 132 - 133 , 286 .

  • Deposit

    LAIZURE, C. MCK., 1928 , SAN FRANCISCO FIELD DIVISION IN TWENTY-FOURTH REPORT OF THE STATE MINERALOGIST: CALIFORNIA STATE MINING BUREAU, P. 101 .

  • Deposit

    CASTELLO, W. O., 1921 , MINES AND MINERAL RESOURCES OF MARIPOSA COUNTY IN SEVENTEENTH REPORT OF THE STATE GEOLOGIST: CALIFORNIA STATE MINING BUREAU, P. 126 .

  • Production

    BOWEN & GRAY, 1957

General comments

Subject category Comment text
Deposit VEIN
Deposit PATENTED 20 ACRE CLAIM. PRODUCED SPECIMENS OF WIRY & ARBORESCENT GOLD.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1973 Gere, W. U.S. Geological Survey
Updater 01-JAN-1979 Bowman, J. And Albers, J. U.S. Geological Survey

Beyond USGS

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

Current status (per MSHA)

StatusAbandoned since 05/20/2020
MSHA mine ID0405781
Mine name (MSHA)Mockingbird Mine
Current operatorEmmett's Excavation Inc
Current controller (parent)John Emmett; Lucretia Emmett
Mine typeUnderground (Metal / non-metal)

Inferred by coordinate + name similarity (211 m, 0.96 match). Confirm against MSHA if precision matters — non-USGS-curated cross-references may occasionally point at a neighbouring mine.

Open MSHA's Mine Data Retrieval System for inspections, accidents, and violations for this mine.

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.