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Blue Spot Group

Occurrence in Mariposa county in California, United States with commodity Tungsten
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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. Nearby scientific data
  8. Economic information about the deposit and operations
  9. Ownership information
  10. Links to other databases
  11. Bibliographic references
  12. General comments
  13. Reporter information

Geologic information

Identification information

Deposit ID 10031276
MRDS ID M009943
Record type Site
Current site name Blue Spot Group
Related records 10212460

Geographic coordinates

Geographic coordinates: -119.81265, 37.68882 (WGS84)
Relative position ON STEEP TERRAIN 1 1/2 AIRLINE MILES NW OF EL PORTAL. APPROACHED BY 2 1/2 MILES OF STEEP DIRT ROAD FROM RANCHERIA FLAT ON HIGHWAY 140.

Site location context

Political divisions (FIPS codes)

Mariposa(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

El Portal(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)

Federal lands

Stanislaus National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States California Mariposa

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 003S 020E 07 California

Commodities

Commodity Importance
Tungsten Critical Primary

Nearby scientific data

(1) -119.81265, 37.68882
ListMap

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Ownership information

  • Type Operator
    Owner John Milanovitch, Barnett Brothers

Comments on the production information

  • NO PRODUCTION TO 1954, AS EXTENSIVE ROAD CONSTRUCTION TO MAKE THIS GROUP OF CLAIMS ACCESSIBLE FOR EXPLORATION WAS NEVER COMPLETED. PROD. IN 1955 & 1956 PER USBM MIN. YB'S V. 3 FOR THOSE YEARS.

Reference information

Bibliographic references

  • Deposit

    CALIF. JOUR. MINES & GEOLOGY, V. 53, NOS. 1 & 2, JAN.-APRIL, 1957, P. 330

General comments

Subject category Comment text
Deposit INCLINE MNG. CO. APPL'N 3252 TO DMEA - REPORTED 6/8/54 BY CLARK & BENSON NO CONTRACT - DMEA INDEX P. 18

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1973 Gere, W. 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.