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Mexican I

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. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Mining district
  13. Ownership information
  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 10031023
MRDS ID M009577
Record type Site
Current site name Mexican I
Related records 10187927

Geographic coordinates

Geographic coordinates: -120.1021, 37.54826 (WGS84)
Elevation 610
Relative position 1 1/2 MI. S. OF BEAR VALLEY (SE1/4 28, NE1/4 33)

Site location context

Political divisions (FIPS codes)

Mariposa(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Bear Valley(quadrangle 1:24,000 scale)

Oakdale(quadrangle 1:100,000 scale)

San Jose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Fresno River(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 017E 23,28 California

Comments on the location information

  • UTM EST. BOWEN LIST CLAIM IN SEC. 23 PROBABLY MEANS SEC. 33 .

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Gold Ore
Quartz Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate
    Stratigraphic age (youngest) Late Jurassic
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite

Nearby scientific data

(1) -120.1021, 37.54826
ListMap

Economic information

Ore body information

  • Strike N 35 W
    Dip 70 NE
    Depth to top 0M

Comments on the geologic information

  • GEOL.DESC: HANGING WALL IS MARIPOSA SLATE FOOTWALL IS PYROXENE ANDESITE GREENSTONE OF PROBABLE UPPER JURASSIC AGE.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1855
Production years 1850 - 1859 , 1908

Mining district

District name Mt. Bullion

Ownership information

  • Type Owner
    Owner Ellen T. Simpson, Et. Al.

Comments on the production information

  • $50,000 REMOVED PRIOR TO 1859 .

Workings at the site

  • Type of workings Underground
    Overall depth 45.72M

Comments on the workings information

  • ORIGINALLY WORKED FROM A SHALLOW PIT; A 150-FT. SHAFT WAS DUG IN 1908, LITTLE OR NO DEVELOPMENT SINCE.

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 , 284

  • Production

    BOWEN & GRAY 1957

General comments

Subject category Comment text
Deposit VEIN SYSTEM IS DISCONTINUOUS AND IS MADE UP OF A SERIES OF SUBPARALLEL MEMBERS & INTERSECTING CUTTER VEINS.
Deposit INCLUDED IN LAS MARIPOSAS GRANT. THE UPPER PART OF THE VEIN APPARENTLY CONTAINED POCKETS OF HIGHGRADE ORE FORMED BY OXIDATION AND REMOVAL OF VALUELESS SULFIDE MINERALS. THERE IS LITTLE INDICATION THAT RIGHT ORE WAS FOUND AT DEPTH BUT VEIN WAS NEVER THOROUGHLY EXPLORED BECAUSE OF THE WATER.
Deposit Discovery Year: 1850'S

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.

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.