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Ivanhoe Mine

Past Producer in Santa Cruz county in Arizona, United States with commodities Silver, Copper, Lead, Gold, Molybdenum, Antimony, Zinc
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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. Production statistics
  18. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10039602
MRDS ID M050441
Record type Site
Current site name Ivanhoe Mine
Alternate or previous names Commercial Tunnel & Shaft
Related records 10161718

Geographic coordinates

Geographic coordinates: -110.80151, 31.5618 (WGS84)
Elevation 1414
Relative position 3 MI NW OF PATAGONIA

Site location context

Political divisions (FIPS codes)

Santa Cruz(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Patagonia(quadrangle 1:24,000 scale)

Fort Huachuca(quadrangle 1:100,000 scale)

Nogales(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Santa Cruz(hydrologic unit)

Santa Cruz(hydrologic accounting unit)

Middle Gila(hydrologic subregion)

Lower Colorado(hydrologic region)

Federal lands

Coronado 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 Arizona Santa Cruz

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 021S 015E 34 E2 OF E2 OF SW4 Arizona

Comments on the location information

  • WEST OF SMITH GULCH; 3/4 MI S OF JOHNSON SPRING ; INFO FROM LAND.ST :1979

Commodities

Commodity Importance
Silver Primary
Copper Primary
Lead Secondary
Gold Tertiary
Molybdenum Tertiary
Antimony Critical Tertiary
Zinc Critical Tertiary

Materials information

Materials Type of material
Chalcocite Ore
Chalcopyrite Ore
Copper Ore
Galena Ore
Gold Ore
Pyrite Ore
Tetrahedrite Ore
Wulfenite Ore
Alunite Gangue
Epidote Gangue

Alteration

  • (Local) Sericitized, Kaolinized, Silicitied

Analytical data

Result ALTERED AREA S OF IVANHOE 50 PPM AG, 0.9 PPM AU, 150 PPM MO, 300 P PM SB, 30 PPM BE, 200 PPM BI, ESPECIALLY NEAR N & E MARGINS OF ALTERED AREA

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Stratigraphic age (youngest) Pliocene
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Rock unit name Squaw Gulch Granite;Lower Member Of Temporal Formation, Rhyolite Tuff & Tuff Breccia
    Rock description Squaw Gulch Granite;Lower Member Of Temporal Formation, Rhyolite Tuff & Tuff Breccia
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite
    Stratigraphic age (youngest) Jurassic
    Chronological age 145
    Dating method K-Ar

Nearby scientific data

(1) -110.80151, 31.5618
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Ew And Ne Trending Quartz Fissure Veins Cutting Diorite And Granite Porphyry; Both Granite And Andesite In Region Are Sliced By Nnw Sheet Ing With Steep Easterly Dip
Type of structure Local
Structure description Mineralized Breccia, Nnw Pre-Paleocene Fault & 2 Paleocene Faults

Ore body information

  • General form SPOTTY ORE SHOOTS, SMALL POCKETS
    Strike E-W
    Dip 80SE
    Thickness 182.88M
    Width 12.19M
    Depth to bottom 182.88M

Controls for ore emplacement

  • Fault Intersections Of Altered, Fractured Area, Quartz Fissure Vein S

Comments on the geologic information

  • VEIN FILLINGS CONSIST OF IRREGULARLY AND CRUDELY BANDED, IRON STAI NED, SILICIFIED, KAOLINIZED, AND ALTERED ROCK BRECCIA AND QUARTZ; VEIN IS FAIRLY POROUS OR HONEYCOMBED AND CONTAINS POCKETS OF GALENA; EASTE RN OR HORN SILVER VEIN IS ASSOCIATED WITH AN ANDESITE DIKE

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1850
Discoverer Mexicans
Year of first production 1850
Year of last production 1924

Mining district

District name Ivanhoe District

Land status

Ownership category National Forest

Production statistics

  • Year 1942
    Period 1905-1942
    Material ORE
    Accuracy Estimate
    Description Cp_Grade: ^Average 51 Oz/T Ag, 2% Cu, Minor Pb
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Copper Copper 2wt-pct
    Major Ore Silver Silver 1440g/mt

Workings at the site

  • Type of workings Underground
    Length 822.96M
    Overall depth 76.2M

Comments on the workings information

  • SHAFT OPERATIONS, EXTENSIVE UNDERGROUND WORKINGS FROM SHAFT. 300 FT EACH OF TUNNELS, DRIFTS, AND SHAFTS INCLUDING THE 200 FT COMMERCIAL TUNNEL OR DRIFT

Comments on development

  • PREVIOUS OWNERS INCLUDE IVANHOE MINING CO (1907-1924), JOHNSON, T OBIN & BEASLEY, HOPKINS, A.H. IVES, J.E. HURD; 25 CLAIMS; RELOCATED IN 1905 BY AMERICAN PROSPECTORS

Reference information

Bibliographic references

  • Deposit

    SCHRADER, 1915, USGS BULL 582

  • Deposit

    DREWES, 1971, USGS MAP I-614

  • Deposit

    KEITH, 1975, ABM BULL 191

  • Deposit

    ELSING & HEINEMAN, 1936, ABM BULL 140

  • Deposit

    ABGMT-USBM FILE DATA

  • Deposit

    USBM FILES, IVANHOE MINE

  • Deposit

    ABGMT CLIPPINGS FILE, IVANHOE MINE

  • Deposit

    ABGMT FILE DATA, STANTON B. KEITH

  • Deposit

    TENNEY, 1927-29, HISTORY OF MINING IN AZ, ABM, P.318

  • Production

    KEITH, 1975; ABM FILE DATA

General comments

Subject category Comment text
Deposit VEIN IS EASTERLY EXTENSION OF MONTEZUMA VEIN. VEINS CRUDELY BANDE D. PROPERTY ALSO CONTAINS TWO OTHER VEINS OR LODES WHICH TREND N, ABOU T PARALLEL WITH RIDGE SEPARATING SQUAW AND SMITH GULCHES AND WITH SHEE TING STRUCTURE IN ROCK; CUTTING OBLIQUELY TO TRANSVERSE MOUTEZUMA VEIN ; WESTERN VEIN KNOWN AS SULFIDE VEIN & EASTERN ONE AS HORN SILVER VEIN ; WESTERN VEIN ENCOUNTERED 50 FT BELOW SURFACE AND CONTAINS SCATTERED ORE SHOOTS REACHING WIDTHS OF 4 FT; EASTERN VEIN IS SEVERAL FT WIDE AN D CONTAINS ORE STRINGERS OR STREAKS FROM ONE TO SEVERAL IN. WIDE.
Deposit THIS REPORT REPRESENTS A MERGER OF ORIGINAL RECORD M050441 AND M00 0410 WITH RECORD M030409 OF JAN WILT IN MOLYBDENUM FILE, CONTACT PERSO N T.G. THEODORE, USGS ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1983 Peterson, Jocelyn A. U.S. Geological Survey
Updater 01-MAY-1982 Calder, Susan R. 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

Authoritative Arizona resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.