Orejana Mine

Prospect in Graham county in Arizona, United States with commodities Copper, Lead, Fluorine-Fluorite, Quartz
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. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10039445
MRDS ID M050089
Record type Site
Current site name Orejana Mine
Related records 10258327

Geographic coordinates

Geographic coordinates: -110.37318, 32.96927 (WGS84)
Elevation 1417
Relative position 1.25 MILES NW OF ARAVAIPA.

Site location context

Political divisions (FIPS codes)

Graham(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Cobre Grande Mountain(quadrangle 1:24,000 scale)

Mammoth(quadrangle 1:100,000 scale)

Tucson(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower San Pedro(hydrologic unit)

San Pedro-Willcox(hydrologic accounting unit)

Middle Gila(hydrologic subregion)

Lower Colorado(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management AZ)

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

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States Arizona Graham

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 005S 019E 26 Arizona

Comments on the location information

  • PHILLIPS GIVES LOCATION AS SEC. 20, T5S, R20E.

Commodities

Commodity Importance
Copper Primary
Lead Primary
Fluorine-Fluorite Critical Tertiary
Quartz Tertiary

Materials information

Materials Type of material
Anglesite Ore
Chalcopyrite Ore
Chrysocolla Ore
Galena Ore
Malachite Ore
Amethyst Gangue
Chalcedony Gangue
Fluorite Gangue

Alteration

  • (Local) Silicification

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Tuff
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Pliocene
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Volcanic Breccia (Agglomerate)
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Tuff
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Pyroclastic Rock > Volcanic Breccia (Agglomerate)
    Rock unit name Horse Mountain
    Rock description Horse Mountain
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite

Nearby scientific data

(1) -110.37318, 32.96927

Economic information

Geologic structures

Type of structure Regional
Structure description Block Faults Trending Nnw. ; Reg.Trends: Minor Pre-Cretaceous E And Ne Trending Folds And Major Post-Cretaceous Nnw Trending Faults.
Type of structure Local
Structure description Orejana Fault.

Ore body information

  • General form TABULAR
    Strike NNW
    Dip 90
    Width 1.22M

Controls for ore emplacement

  • Fault Traceable 2 Miles Cuts Volcanic Units.

Comments on the geologic information

  • GEOL.DESC: VOLCANICS CONSIST OF SILICIC FLOW BRECCIAS AND LIGHT PURPLE SILICIC TUFF AND PURPLE ANDESITES. VEIN MATERIAL IN FAULT ZONE IS SILICIFIED.

Economic information about the deposit and operations

Development status Prospect
Commodity type Both
Deposit size Small
Significant No
Discovery year 1900

Mining district

District name Aravaipa District

Comments on the production information

  • NO PRODUCTION IS RECORDED, BUT SOME ORE MAY HAVE BEEN MINED FROM A SMALL STOPE IN 1890-1900.

Workings at the site

  • Type of workings Underground
    Length 213.36M

Reference information

Bibliographic references

  • Deposit

    USGS PP 461.

  • Deposit

    USGS BULL 763.

  • Deposit

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

  • Deposit

    1925 GEOLMAP ROSS, C.P. BULL. 763.

  • Deposit

    1964 GEOLMAP SIMONS, F.S. PROF. PAPER 461.

  • Other Database

    CIMRI

  • Production

    SIMONS, 1964.

General comments

Subject category Comment text
Deposit VEIN IS IN BRECCIA ZONE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1972 Bergquist, Joel R. U.S. Geological Survey
Updater 01-DEC-1992 Orris, Greta J. U.S. Geological Survey

Beyond USGS

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

Authoritative Arizona resources

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