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Oregon Copper Mines

Past Producer in Pima county in Arizona, United States with commodities Copper, Silver, Lead, Gold, 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 10039405
MRDS ID M050036
Record type Site
Current site name Oregon Copper Mines
Alternate or previous names Coconino, Chicago
Related records 10162330

Geographic coordinates

Geographic coordinates: -110.77262, 31.82874 (WGS84)
Elevation 1646
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)

Rillito(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 Pima

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 18S 15E 36 Arizona

Comments on the location information

  • N CENTRAL SECTION 36.

Commodities

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

Comments on the commodity information

  • MALACHITE, CUPRITE PROBABLY SECONDARY AFTER CHALCOPYRITE

Materials information

Materials Type of material
Chrysocolla Ore
Cuprite Ore
Malachite Ore

Alteration

  • (Local) Intense Silicification.

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Quartz Latite
    Rock unit name Quartz Latite Int 56 +-2my Quartz Latite
    Rock description Quartz Latite Int 56 +-2my Quartz Latite
    Stratigraphic age (youngest) Paleocene
    Stratigraphic age (youngest) Pennsylvanian
    Stratigraphic age (youngest) Paleocene
    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) -110.77262, 31.82874
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 BEDDED
    Dip N

Controls for ore emplacement

  • Fracture Zone.

Comments on the geologic information

  • ORE GEN IN LIME-SILICATE ZONES CONTROLLED BY FAULTS AND FRACTURES. ; GEOL.DESC: AGE OF MINERALIZATION BELIEVED TO BE THAT OF THE QUARTZ LATITE INTRUSIVE 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 Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Helvetia-Rosemont District

Land status

Ownership category National Forest

Production statistics

  • Year 1899
    Period 1890-1899
    Material ORE CU
    Accuracy Estimate
    Description Cp_Grade: ^10% Cu, 1 Oz Ag/Ton
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Silver Silver 28g/mt
    Trace Ore Copper Copper 10wt-pct

Comments on the production information

  • PRODUCTION COMBINED WITH CHICAGO AND OREGON MINES.

Workings at the site

  • Type of workings Underground
    Overall depth 30.48M

Comments on the workings information

  • DISTRICT IS POSSIBLY NEW PORPH. COPPER DEPOSIT.

Comments on development

  • ANACONDA REPORTS ROSEMONT-HELVETIA INTRUSIVE QUARTZ LATITE AS POTENTIAL PORPH. COPPER DEPOSIT IN 1971.

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,INDEX OF MINING PROPERTIES IN PIMA COUNTY,ARIZONA:ARIZONA BUREAU OF MINES BULLETIN 189,P.127.

  • 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.

General comments

Subject category Comment text
Deposit HANGING WALL= GRANITE PORPHYRY OF SCHRADER (1915) - PROB. QUARTZ LATITE OF DREWES (1971)
Deposit THE STRATIGRAPHIC UNITS USED ARE THOSE OF H. DREWES - 1971 USGS MAP I-613. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1972 Keith, William J. U.S. Geological Survey

Beyond USGS

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

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.