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  3. Mineral Resource Data System (MRDS)

Union Leader Group

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. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Land status
  12. Links to other databases
  13. Bibliographic references
  14. General comments
  15. Reporter information

Geologic information

Identification information

Deposit ID 10034749
MRDS ID M021639
Record type Site
Current site name Union Leader Group
Related records 10211964

Geographic coordinates

Geographic coordinates: -119.93848, 37.74492 (WGS84)
Elevation 1219
Relative position 2 MI N & SLIGHTLY W LITTLE GRIZZLEY MTN. ON DEER FLAT.

Site location context

Political divisions (FIPS codes)

Mariposa(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Kinsley(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 002S}002S}002S}002S 018E}018E}019E}019E 24}25}19}30 California

Comments on the location information

  • UTM EST. Changed latitude/longitude to match DEP_ID 10211964.

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Quartz Gangue

Nearby scientific data

(1) -119.93848, 37.74492
ListMap

Economic information

Ore body information

  • Strike N
    Dip 20 - 45 E
    Thickness 0.91M
    Depth to top 0M

Economic information about the deposit and operations

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

Land status

Ownership category National Forest

Comments on the production information

  • LAST ACTIVE 1938 - 1940

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. 313

  • Deposit

    LAIZURE, C MCK., 1928 , SAN FRANCISCO FIELD DIVISION, IN TWENTY - FOURTH REPORT OF THE STATE MINERALOGIST: CALIFORNIA STATE MINING BUREAU, P. 138

  • Production

    BOWEN & GRAY, 1957

General comments

Subject category Comment text
Deposit VEIN, 1 - 3 FT THICK
Deposit UNPATENTED ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Editor 14-MAR-1994 Mosier, D.L. U.S. Geological Survey CORRECTED LAT.-LONG., UTM ZONE, SEC., TOWNSHIP, RANGE, DEPOSIT TYPE.
Reporter 01-FEB-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.