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Ibex Mine

Past Producer in Juab county in Utah, United States with commodities Gold, Silver, Copper, Bismuth
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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. Geologic structures
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Ownership information
  17. Production statistics
  18. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. Reporter information

Geologic information

Identification information

Deposit ID 10020444
MRDS ID DC13239
Record type Site
Current site name Ibex Mine
Related records 10130327

Geographic coordinates

Geographic coordinates: -113.04109, 39.56356 (WGS84)
Elevation 1989
Relative position EAST SLOPE OF LADY LAIRD PEAK

Site location context

Political divisions (FIPS codes)

Juab(county)

Utah(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Lady Laird Peak(quadrangle 1:24,000 scale)

Fish Springs(quadrangle 1:100,000 scale)

Delta(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Sevier(hydrologic unit)

Escalante Desert-Sevier Lake(hydrologic accounting unit)

Escalante Desert-Sevier Lake(hydrologic subregion)

Great Basin(hydrologic region)

Geographic areas

Country State County
United States Utah Juab

Public Land Survey System information

Meridian Township Range Section Fraction State
Salt Lake 014S 011W 36 Utah

Comments on the location information

  • SECTION SUBDIVISIONS NW 1/4 SW 1/4 NW 1/4 THE IBEX IS IMPROPERLY MARKED ON TOPO MAP.

Commodities

Commodity Importance
Gold Primary
Silver Primary
Copper Primary
Bismuth Critical Secondary

Comments on the commodity information

  • TYPICAL ORE CONSISTS OF CRYSTALIZED CALCITE MATRIX ENCLOSING BOULDERS OF DENSE DARK SILICIOUS AU-CU ORE TOGETHER WITH ANGULAR BOULDERS OF LS AND A FEW ROUNDED PEBLES OF PROSPECT MTN QUARTZITE. BEST AU VALUES ARE FOUND IN THE DARK SILICIOUS BOULDERS WITH CALCITE MATRIX.

Materials information

Materials Type of material
Gold Ore

Analytical data

Result NORTH 1/2 OF DUMP AT UPPER TUNNEL: 2.1% CU, 0.70% AG, 0.30 OZ AU
Result SOUTH 1/2 OF DUMP: 1.77% CU, 1.00 OZ AG, 0.25 OZ AU: RAISE IN STOPE ABOVE MIDDLE TUNNEL: 2.3% CU, 3.10 OZ AG, 0.51 OZ AU
Result GRAB SAMPLE BELOW TUNNEL LEVEL: 2.9% CU, 2.8 OZ AG, 0.62 OZ AU: ASSORTED ORE FOR SHIPMENT FROM DUMP: 4.15% CU, 3.4 OZ AG, 0.60 OZ AU

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Tuff
    Rock unit name Intrusives (Qtz Monzonite)
    Rock description Intrusives (Qtz Monzonite)
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Late Cambrian
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Late Cambrian
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Dolomite H (Marjum Formation)
    Rock description Dolomite H (Marjum Formation)

Nearby scientific data

(1) -113.04109, 39.56356
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Drum Mtns Homocline Strikes N 20 E And Dips 30 Deg. Sw
Type of structure Local
Structure description Ibex Fault (N 45 E At 60 Deg Se) Droping The Ore Body About 50 Ft To The South

Ore body information

  • General form IRREGULAR PIPE OR CHIMNEY 350 FT LONG
    Strike S 30 DEG W
    Dip 60 SE
    Thickness 18.29M
    Length 106.68M
    Width 18.29M
    Depth to top 0M
    Depth to bottom 53.34M

Controls for ore emplacement

  • Proximity To Contact Of Intrusive Dikes With Cambrian Carbonates

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1878
Discoverer Ibex Mining Co.
Year of first production 1894
Production years 1895 , 1904 , 1909 - 1917 , 1934 - 51

Mining district

District name Detroit District

Land status

Ownership category Private

Ownership information

  • Type Owner-Operator
    Owner Utah Central Mining Co.
    First year 1934

Production statistics

  • Year 1941
    Material CU
    Accuracy Accurate
    Description Ap_Grade: ^Jan-Feb. 1934 Ave. 0.395% Cu
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 0wt-pct
  • Year 1941
    Material AU
    Accuracy Accurate
    Description Ap_Grade: ^Ave 0.195 Oz/Ton
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 6g/mt

Comments on the production information

  • GOLD-COPPER ORE IN ITEM #8 WAS SHIPPED TO LEAMINGTON. IT IS REPORTED THAN NO ORE CONTAINING LESS THAN 1 OZ OF AU WAS SHIPPED BECAUSE OF HIGH TRANSPORTATION CHARGES AND THAT $100-200 ORE WAS COMMON PRODUCTION YEARS: 1895, 1904, 1909-1917, 1934-1951. ELEVEN CAR LOADS IN 1901. THE CARLOADS GAVE $22.50 IN AU, 2.45 OZ AG, AND 2.4% CU, UP TO $39.20 IN AU, 4.5 OZ AG, & 14.5% CU GROSSING $32.40 TO $45.38/TON. AT 1979 PRICES IT WOULD GROSS $2500/TON

Comments on the reserve resource information

  • ESTIMATED 100,000 TONS OF ORE IN LOWER WORKINGS

Workings at the site

  • Type of workings Surface/Underground
    Length 417.58M
    Overall depth 78.33M

Comments on the workings information

  • MINE WORKINGS CONSIST OF A LOWER TUNNEL ABOUT 720 FT LONG, AN UPPER TUNNEL ABOUT 300 FT LONG & AN INCLINE STOPE EXTENDING SW ABOUT 350 FT MAKING CONNECTION WITH BOTH LOWER & UPPER TUNNEL LEVELS. THE UPPER TUNNEL IS 92 FT BELOW THE SURFACE, AND THE LOWER TUNNEL IS 165 FT BELOW UPPER TUNNEL.

Comments on development

  • THE UTAH GEOL. & MIN. SURVEY HAS THE ORIGINAL REPORT OF GUY CRANE IN ITS FILES. THE REPORT CONTAINS MINE MAPS, SURVEYS, GEOLOGY REPORTS OF OTHER GEOLOGISTS, ASSAYS AND OTHER INFORMATION.

Reference information

Bibliographic references

  • Analytical Data

    SRC.REF: 1916 REPORT (GEN. REF. #4) ANALYTICAL (GENERA)

  • Deposit

    USBM MINERAL YEARBOOK: 1934, P. 276; 1935, P. 332; 1939, P. 473; 1940, P. 453, 456; 1941, P. 464; 1945, P. 467, 470.

  • Deposit

    CRANE, GUY W., 1934, REPORT ON HOLDINGS OF UTAH CENTRAL MINING CO., PRIVATE RPT, 33 P.

  • Deposit

    WILLIAMS, JOHN, 1901, ENGINEERS REPORT ON THE IBEX MINE: PRIVATE COMPANY REPORT.

  • Deposit

    FARRISH, W.A., 1916, REPORT ON IBEX MINE: PRIVATE CO. RPT., 12 P.

  • Deposit

    CRANE, G.W., 1934, GEOLOGY AND EVALUATION OF COMPANY HOLDINGS IN THE DETROIT DISTRICT: REPORT TO MR. FRANK SYLVESTER, PRESIDENT OF UTAH CENTRAL MINES COMPANY FROM G.W. CRANE, CONSULTING GEOLOGIST, MARCH 15, 1934, MAPS, SURVEYS, ASSAYS, ETC.

  • Deposit

    1920 RECON BUTLER, B.S., USGS PP 111

  • Deposit

    1961 RECON CRITTENDEN, M.D., USGS BULL. 1082-H

  • Production

    CRANE, G.W., 1934, UNPUBLISH REPORT: UTAH CENTRAL MINES CO.

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.

External references

Maps centered on this site