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Steppe Mine

Past Producer in Pima county in Arizona, United States with commodities Gold, Silver, Copper, Lead, Zinc, Barium-Barite, Rhenium, Molybdenum
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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. Production statistics
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10039670
MRDS ID M050622
Record type Site
Current site name Steppe Mine
Alternate or previous names Little Mary Mine
Related records 10113599

Geographic coordinates

Geographic coordinates: -111.91321, 32.01623 (WGS84)
Elevation 800
Relative position 8 MI WSW OF COMOBABI, 1 MI NE OF WICKCHOUPAI VILLAGE.

Site location context

Political divisions (FIPS codes)

Pima(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Ko Vaya(quadrangle 1:24,000 scale)

Silver Bell Mountains(quadrangle 1:100,000 scale)

Tucson(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

San Simon Wash(hydrologic unit)

Rio Sonoyta(hydrologic accounting unit)

Sonora(hydrologic subregion)

Lower Colorado(hydrologic region)

Federal lands

BIA(Federal land areas administered by BIA)

Geographic areas

Country State County
United States Arizona Pima

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 016S 004E 23,26 SW4 (23); NW4 (26) Arizona

Commodities

Commodity Importance
Gold Primary
Silver Primary
Copper Primary
Lead Primary
Zinc Critical Secondary
Barium-Barite Critical Tertiary
Rhenium Tertiary
Molybdenum Tertiary

Comments on the commodity information

  • RHENIUM FOUND SPECTROGRAPHICALLY IN BORNITE.

Materials information

Materials Type of material
Bornite Ore
Chalcocite Ore
Galena Ore
Pyrite Ore
Tetrahedrite Ore
Barite Gangue
Dolomite Gangue
Molybdenite Gangue
Quartz Gangue

Alteration

  • (Local) Oxidation And Leaching Of Wall Rock

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite

Nearby scientific data

(1) -111.91321, 32.01623
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Ne Vertical Fault Displacing Little Mary And Chicago Veins; Nw Fau Lt (Dip 40 Ne) Displacing Little Mary Vein

Ore body information

  • General form LENSING
    Strike NW
    Dip 70 NE
    Width 3.05M

Controls for ore emplacement

  • Altered Andesite, Brecciated Fissure Veins In Gently Dipping Andesites

Comments on the geologic information

  • FLOWS ARE INTRUDED BY DIKES, PICACHO ANDESITE, AND COON CANYON VOLCANICS.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Both
Deposit size Small
Significant No
Year of first production 1917
Year of last production 1970

Production statistics

  • Year 1970
    Period 1917-1970
    Material ORE
    Accuracy Estimate
    Description Cp_Grade: ^0.2 Oz/T Au, 15 Oz/T Ag, 54% Pb, 4% Cu Little Zn
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Ore Lead Lead 54wt-pct
    Ore Gold Gold 6g/mt
    Major Ore Copper Copper 4wt-pct
    Ore Silver Silver 424g/mt

Workings at the site

  • Type of workings Underground
    Overall depth 76.2M

Comments on the workings information

  • SHAFT AND TUNNEL WORKINGS; AS OF 1925, A 50 TON FLOATATION MILL.

Comments on development

  • OPERATORS INCLUDED COMO-PIMA MINING CO, BEIDS MINING CO, G.A. WITHERS

Reference information

Bibliographic references

  • Deposit

    KEITH, 1974, ABM BULL 189, P. 111.

  • Deposit

    WILLIAMS, 1962, PHD THESIS UNIV OF ARIZONA, 145 P.

  • Deposit

    ABGMT CLIPPINGS FILE DATA.

  • Deposit

    PHILLIPS, K.A., 1987, ARIZONA INDUSTRIAL MINERALS: ARIZONA DEPARTMENT OF MINES AND MINERAL RESOURCES MINERAL REPORT 4, 185 P.

  • Deposit

    ARIZ. BUREAU OF MINES BULL. 137.

  • Other Database

    CIMRI

  • Production

    KEITH, 1974.

General comments

Subject category Comment text
Deposit 2 VEINS ABOUT 500 FT APART. QUARTZ GANGUE WITH BARITE AND DOLOMITE SHOOTS AND STRINGERS.
Deposit THIS REPORT REPRESENTS A MERGER OF ORIGINAL RECORD M050622 WITH RECORD M030516 OF JAN WILT IN MOLYBDENUM FILE, CONTACT PERSON T.G. THEODORE, USGS. THIS RECORD CONTAINS DATA FROM DUPLICATE RECORD D002878 OF J.W. HASLER WHICH HAS BEEN DELETED FROM MAIN MRDS.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-83 Peterson, Jocelyn A. U.S. Geological Survey
Updater 01-DEC-92 Orris, Greta J. 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.