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Dell Mine

Past Producer in Juab county in Utah, United States with commodities Fluorine-Fluorite, Uranium, Beryllium
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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. Geologic structures
  12. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Land status
  17. Ownership information
  18. Production statistics
  19. Workings at the site
  20. Links to other databases
  21. Bibliographic references
  22. General comments
  23. Reporter information

Geologic information

Identification information

Deposit ID 10020301
MRDS ID DC12952
Record type Site
Current site name Dell Mine
Alternate or previous names The Claims Now Held Are the Dell, Red Hill, Big Boy & Oversite
Related records 10275669

Geographic coordinates

Geographic coordinates: -113.17526, 39.74855 (WGS84)
Elevation 1722
Relative position 1 MILE NW OF EAGLE ROCK RIDGE

Site location context

Political divisions (FIPS codes)

Juab(county)

Utah(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Topaz Mountain West(quadrangle 1:24,000 scale)

Fish Springs(quadrangle 1:100,000 scale)

Delta(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Southern Great Salt Lake Desert(hydrologic unit)

Great Salt Lake(hydrologic accounting unit)

Great Salt Lake(hydrologic subregion)

Great Basin(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management UT)

Bureau of Land Management UT BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States Utah Juab

Public Land Survey System information

Meridian Township Range Section Fraction State
Salt Lake 012S 012W 27 Utah

Comments on the location information

  • SECTION SUBDIVISIONS NW 1/4 NE 1/4 SE 1/4

Commodities

Commodity Importance
Fluorine-Fluorite Critical Primary
Uranium Secondary
Beryllium Critical Secondary

Comments on the commodity information

  • CHIEF IMPURITIES ARE MONTMORILLONITE, CREAM COLORED DOLOMITE & QUARTZ

Materials information

Materials Type of material
Fluorite Ore
Bertrandite Gangue
Carnotite Gangue

Alteration

  • (Local) Clay Alteration

Analytical data

Result SAMPLE FROM A PIT WEST OF PIPE AVERAGES 93.37% CAF2, 0.73% CACO3, 0.60% SIO2. MAIN ORE BODY (1964) = .028% U3O8, ADIT OF NORTH ORE BODY = .083% U3O8 NORTH ORE BODY 1951: .083% U3O8, VEIN .016% U3O8

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Volcanic Breccia (Agglomerate)
    Stratigraphic age (youngest) Miocene
    Stratigraphic age (youngest) Miocene
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Rock unit name Por. Rhyolitic Member Of Spor Mtn Formation/Breccia;Umio Stratified Tuff Member Of Topaz Mtn. Rhyolite
    Rock description Por. Rhyolitic Mbr. Of Spor Mtn Formation/Breccia;Umio Stratified Tuff Mbr Of Topaz Mtn. Rhyolite
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Dolomite
    Rock unit name Lost Sheep Dolomite (Host);Harrisite Dolomite;Bell Hill Dolomite (Host);Fluoride Dolomite
    Rock description Lost Sheep Dolomite (Host);Harrisite Dolomite;Bell Hill Dolomite (Host);Fluoride Dolomite
  • Host or associated Host
    Rock type Sedimentary Rock > Chemical Sediment > Chert

Nearby scientific data

(1) -113.17526, 39.74855
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Basin & Range
Type of structure Local
Structure description Numerous Branching Faults That Are Difficult To Trace Unless They Contain Breccia

Ore body information

  • General form PIPE-LIKE
    Dip VERTICAL
    Depth to top 0M
    Depth to bottom 15.24M

Controls for ore emplacement

  • Along Pipes And Veins In Favorable Replacement Carbonates & In Brecciated Fault Zones

Comments on the geologic information

  • THE AREA IS CUT BY MASSES OF INTRUSIVE BRECCIA THAT RANGE FROM SMALL DIKES (AN INCH OR 2) TO LARGE MASSES (SEVERAL HUNDRED FT ACROSS). ORE RANGED IN COLOR FROM WH-LAVENDER-DARK PURPLE

Economic information about the deposit and operations

Development status Past Producer
Commodity type Both
Deposit size Small
Significant No
Discovery year 1947
Discoverer T.A. Claridge, L. Morley, A. Wilden
Year of first production 1948

Mining district

District name Spor Mtn-Thomas Range

Land status

Ownership category BLM Administrative Area

Ownership information

  • Type Operator
    Owner M And M Mining Co.
  • Type Owner
    Owner Ward Leasing Co.

Production statistics

  • Year 1953
    Period 1948-1953
    Accuracy Accurate
    Description Cp_Grade: ^80% F, 3-4% Sio2, 2% Caco3
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Fluorine-Fluorite Fluorine 80wt-pct

Comments on the production information

  • MINE HAS BEEN IDLE SINCE 1954 .

Comments on the reserve resource information

  • A POTENTIALLY UNDISCOVERED ORE PIPE MAY BE INDICATED BY AN ALTERATION ZONE IN THE DELL ADIT, 400 FT FROM THE PORTAL

Workings at the site

  • Type of workings Underground
    Length 304.8M
    Overall depth 15.24M

Comments on the workings information

  • WORKINGS CONSIST OF 2 ADITS, THE LONGEST IS 933 FT, A 50 FT RAISE

Reference information

Bibliographic references

  • Deposit

    BULLOCK, K.C., 1976, FLUORITE OCCURRENCES IN UTAH: UTAH GEOL. & MINERAL SURVEY BULL. 110

  • Deposit

    STAATZ, M.H., & OSTERWALD, F.W., 1959, GEOLOGY OF THE THOMAS RANGE FLUORSPAR DISTRICT, JUAB COUNTY: USGS BULL. 1069

  • Deposit

    STAATZ, M.H., AND CARR, W.J., 1964, GEOLOGY AND MINERAL DEPOSITS OF THE THOMAS & DUGWAY RANGES, JUAB-TOOELE CO., UT: USGS PP 415

  • Deposit

    STAATZ, M.H., AND WILMARTH, V.R., & BAUER, H.L., JR., 1951, RADIOACTIVE FLUORITE IN THE THOMAS RANGE, JUAB CO., UT: USGS TEI # 136, 88 P.

  • Deposit

    1951 DIREXPL US AEC TEI-136

  • Deposit

    COCHRAN, K.L., 1952, FLUORSPAR RESOURCES OF CALIF., NEV., UTAH, IDAHO, & COLORADO ADJACENT & TRIBUTARY TO FACILITIES OF THE UNION PACIFIC RR CO: UPRC, LOS ANGLES CALIF., 78 P.

  • Deposit

    1959 RECON STAATZ, USGS BULL. 1069

  • Deposit

    1964 RECON STAATZ, USGS PP 415

  • Deposit

    1979 GEOLMAP LINDSEY, D.A., USGS MAP-I-1176

  • Production

    BULLOCK, 1976, STAATZ, 1964

General comments

Subject category Comment text
Deposit MINE HAS BEEN IDLE SINCE 1954. DEPOSITS WERE IN 2 ORE PIPES. THE SMALLER ONE CALL "THE RATTLESNAKE", THE LARGER CALLED "THE DELL" AND ANOTHER SMALLER PIPE CALLED THE "RED HILL"
Deposit THE "RED HILL" PIPE MEASURED ONLY 8 X 10 FT AND ADIT CUT THE ORE PIPE AT 115 FT, 35 FT BELOW SURFACE. THE BODY WAS STOPED 25 FT ABOVE AND BELOW WHERE IT PINCHED OUT IN QTZITE. ONLY 400 T ON F. WAS MINED FROM THE RED HILL PIPE. THE RATTLESNAKE PIPE MEASURED 32 FT IN DIAMETER, STOPED 20 FT BELOW & TO THE SURFACE, AND PRODUCED 1,400 T. THE DELL PIPE MEASURED 45X40 FT BOTTOMED IN FISH HAVEN DOLO. & PRODUCED 14,000 T OF ORE. ; INFO.SRC : 3 FIELD OBSERV

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1974 Unknown U.S. Geological Survey
Updater 01-MAR-1980 Everts, Mike L. U.S. Geological Survey

Beyond USGS

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

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