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Bulldozer Mine

Producer in Pima county in Arizona, United States with commodities Copper, Gold, Silver
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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 10039402
MRDS ID M050031
Record type Site
Current site name Bulldozer Mine
Alternate or previous names Del Rio Mine
Related records 10283145

Geographic coordinates

Geographic coordinates: -110.79846, 31.87346 (WGS84)
Elevation 1250
Relative position 28 MILES SE OF TUCSON

Site location context

Political divisions (FIPS codes)

Pima(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Helvetia(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)

Geographic areas

Country State County
United States Arizona Pima

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 18S 15E 15 Arizona

Comments on the location information

  • N CENTRAL SECTION 15.; HASLER LISTS SECTION AS 13 & 24

Commodities

Commodity Importance
Copper Primary
Gold Secondary
Silver Secondary

Comments on the commodity information

  • MALACHITE, AZURITE AND CHRYSOCOLLA PROBABLY SECONDARY AFTER COPPER AND ?. PRESENCE OF MOLYBDENUM REPORTED IN 1944, NO PRODUCTION

Materials information

Materials Type of material
Chrysocolla Ore
Malachite Ore
Tenorite Ore

Alteration

  • (Local) Intense Silicification

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Granodiorite Stock 54 +-2my Granodiorite
    Rock description Granodiorite Stock 54 +-2my Granodiorite
    Stratigraphic age (youngest) Paleocene
    Stratigraphic age (youngest) Paleocene
    Stratigraphic age (youngest) Pennsylvanian
    Stratigraphic age (youngest) Pennsylvanian
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Horquilla Limestone Limestone
    Rock description Horquilla Limestone Limestone

Nearby scientific data

(1) -110.79846, 31.87346
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Homoclinal ; Reg.Trends: Tilting And Broad Open Folds In S. And Extensive Faulting In N.
Type of structure Local
Structure description Thrust And Normal Faulting - Fracture Zones.

Ore body information

  • General form IRREGULAR
    Strike E-W
    Dip 60N

Controls for ore emplacement

  • Crushed Blocks Of Silicated Limestone.

Comments on the geologic information

  • ORE GEN IN LIME-SILICATE ZONES CONTROLLED BY FAULTS AND FRACTURES. PALEOZOIC LIMESTONE IS IN THRUST CONTACT WITH LARAMA F5 ARIZONA DEPT OF MINERAL RESOURCES FILE DATA IDE GRANODIORITE ; GEOL.DESC: AGE OF MINERALIZATION BELIEVED TO BE THAT OF THE GRANODIORITE STOCK OF DREWES -1971. ; REG.COM: STRUCTURE IN DISTRICT IS THRUST FAULTING - HIGH ANGLE NORMAL FAULTING AND FOLDING.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1879
Year of first production 1879
Year of last production 1960

Mining district

District name Helvetia-Rosemont District

Land status

Ownership category Private

Ownership information

  • Type Operator
    Owner Arivaca Land And Devel. Co.
    Home office Box 83, Sahuarita, Az.
    First year 1961
  • Type Owner
    Owner P. R. And Alice Ruelas

Production statistics

  • Year 1955
    Period 1879-1955
    Material ORE CU
    Accuracy Estimate
    Description Cp_Grade: ^5% Cu, 1 Oz Ag/Ton, Minor Au
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Gold Gold 28g/mt
    Trace Ore Copper Copper 5wt-pct

Comments on the production information

  • INTERMITTENT PRODUCTION.

Workings at the site

  • Type of workings Surface/Underground
    Overall depth 25.91M

Comments on the workings information

  • ONE 85 FT SHAFT, ONE 55 FT SHAFT, ONE 20 FT SHAFT INCLINED 45N, TUNNEL 75 FT, PLUS OPEN CUTS. IN 1960, WORKINGS BECAME SMALL OPEN PIT

Comments on development

  • ANACONDA REPORTS ROSEMONT-HELVETIA INTRUSIVE QUARTZ LATITE AS POTENTIAL PORPH. COPPER DEPOSIT IN 1971. ACTIVE 1879-1900, 1914-1917, 1945-1951, LEACHING BEGAN IN 1959

Reference information

Bibliographic references

  • Deposit

    SCHRADER, F. C. , 1915 USGS BULL. 582

  • Deposit

    ARIZONA BUREAU OF MINES 1971 FIELDNOTES V. 1 NO. 2

  • Deposit

    DREWES, H. 1971 USGS MAP I-613 (SAHUARITA QUAD)

  • Deposit

    KEITH,S.B.,1974,ABM BULLETIN 189, P.124.

  • Deposit

    USGS BULL. 1027-F

  • Deposit

    1909 RECON F. C. SCHRADER U.S.G.S. BULL. 582

  • Deposit

    1971 DIREXPL ANACONDA-POSSIBLE NEW PORPH. COPPER DEPOSIT.

  • Deposit

    1971 GEOLMAP H. DREWES U.S.G.S. MAP I-613

  • Production

    KEITH,S.B.,1974.

General comments

Subject category Comment text
Deposit THE STRATIGRAPHIC UNITS USED ARE THOSE OF H. DREWES - 1971 USGS MAP I-613. RECORD # D003048 BY J. WILLIAM HASSLER HAS BEEN INCORPORATED INTO THIS ONE. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT
Deposit DEPOSIT IN CRUSHED LIMESTONE. DIPS OF VEINS VARY FROM VERTICAL TO 45 AND MAY CHANGE ABRUPTLY. TRENDS ARE GENERALLY E-W, BUT ALSO VARY

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1972 Keith, William J. U.S. Geological Survey
Updater 01-OCT-1981 Gest, Don E. U.S. Geological Survey
Updater 01-JAN-1978 Hasler, J. William 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.