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  3. Mineral Resource Data System (MRDS)

Juniper Mine

Past Producer in Tuolumne county in California, United States with commodity Uranium
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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. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Production statistics
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10037763
MRDS ID M035952
Record type Site
Current site name Juniper Mine

Geographic coordinates

Geographic coordinates: -119.79766, 38.29797 (WGS84)
Elevation 2609
Relative position 8.6 MI SO 31 DEGREES EAST OF DARDANELLES CONE

Site location context

Political divisions (FIPS codes)

Tuolumne(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Dardanelle(quadrangle 1:24,000 scale)

Bridgeport(quadrangle 1:100,000 scale)

Walker Lake(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Stanislaus(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 Tuolumne

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 005N 020E 08 California

Commodities

Commodity Importance
Uranium Primary

Materials information

Materials Type of material
Coffinite Ore
Torbernite Ore
Pyrite Gangue

Alteration

  • (Local) Upper Part Of Deposit Oxidized

Analytical data

Result GRAB SAMPLE RANGE 2.01 PPM TO 724 PPM

Host and associated rocks

  • Host or associated Associated
    Rock type Unconsolidated Deposit > Clay, Mud
    Stratigraphic age (youngest) Miocene
    Stratigraphic age (youngest) Miocene
    Stratigraphic age (youngest) Miocene
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Tuff
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Sandstone
    Rock unit name Relief Peak Formation
    Rock description Relief Peak Formation

Nearby scientific data

(1) -119.79766, 38.29797
ListMap

Economic information

Ore body information

  • General form ELONGATE PARALLEL TO CHANNEL
    Thickness 4.27M

Controls for ore emplacement

  • Ore Confined To Carbonaceous Sediments Near Base Of Channel

Comments on the geologic information

  • DISSEMINATED PYRITE BELOW OXIDIZED ZONE; ABUNDANT CARBONACEOUS MATERIAL

Economic information about the deposit and operations

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

Mining district

District name Sonora Pass Area

Land status

Ownership category Private

Production statistics

  • Year 1964
    Period 1963 - 1964
    Material U
    Accuracy Estimate
    Description Cp_Grade: ^0.35 Percent U3o8
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    U3O8 Uranium Uranium 0wt-pct

Comments on the workings information

  • LARGE OPEN PIT AND CUTS

Reference information

Bibliographic references

  • Deposit

    DURHAM, D. L.; FELMLCE, J. K., 1980 , NATIONAL URANIUM RESOURCE EVALUATION, WALKER LAKE QUAD., CALIF. AND NEV., UNPUBL. REPORT.

  • Deposit

    TOOKER, MORRIS, FILLO, 1970 , MINERAL RESOURCES OF THE EMIGRANT BASIN PRIMITIVE AREA, CALIF., USGS BULL. 1261-G, P. G1-G70 .

  • Production

    RAPP, J., 1978 , JUNIPER URANIUM MINE, TUOLUME CO., CA. CALIF. GEOLOGY, V. 31 , NO. 9 , P 199 - 202 .

General comments

Subject category Comment text
Deposit 40 - 50 TIMES BG LOCALLY, 6 - 8 TIMES BG GENERALLY

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1980 Fiebelkorn, J. B. (Stewart, J. H.) 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.