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  3. Mineral Resource Data System (MRDS)

Cochise Project

Prospect in Cochise county in Arizona, United States with commodities Copper, Lead, Zinc, 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. Economic information about the deposit and operations
  12. Mining district
  13. Ownership information
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10056502
MRDS ID TC00529
Record type Site
Current site name Cochise Project
Alternate or previous names East Lavendar Ore Body

Geographic coordinates

Geographic coordinates: -109.80065, 31.43347 (WGS84)
Elevation 1707
Location accuracy 100(meters)
Relative position 3 KM SE OF COPPER QUEEN, ADJACENT TO E OF LAVENDAR PIT (CLOSED 1974)., Coordinates Correspond To Hill Center Of Proposed Open Pit

Site location context

Political divisions (FIPS codes)

Cochise(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Bisbee NE(quadrangle 1:24,000 scale)

Douglas(quadrangle 1:100,000 scale)

Douglas(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Whitewater Draw(hydrologic unit)

Rio De Bavispe(hydrologic accounting unit)

Sonora(hydrologic subregion)

Lower Colorado(hydrologic region)

Federal lands

ST(Federal land areas administered by ST)

Geographic areas

Country State County
United States Arizona Cochise

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 023S 024E Arizona

Comments on the location information

  • EASTSIDE OF BISBEE-TOMBSTONE ROAD 1.5 KM S OF BISBEE.

Commodities

Commodity Importance
Copper Primary
Lead Secondary
Zinc Critical Secondary
Molybdenum Secondary

Comments on the commodity information

  • SUPERGENE ENRICHMENT BY GROUNDWATER

Materials information

Materials Type of material
Chalcocite Ore
Molybdenite Ore
Pyrite Gangue
Quartz Gangue

Alteration

  • (Local) Cu Porphyry Alteration Styles Including Argillic, Sericitic, Phyllic Zones

Analytical data

Result GRADES APPROXIMATELY 0.6-0.8% CU

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
    Rock unit name Sacramento Stock Extension
    Rock description Sacramento Stock Extension
    Stratigraphic age (youngest) Jurassic
    Chronological age 170.5
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite
    Stratigraphic age (youngest) Jurassic
    Chronological age 170.5

Nearby scientific data

(1) -109.80065, 31.43347
ListMap

Economic information

Comments on the geologic information

  • LEACHED CAP WITH HIGHER GRADE CU BLANKET OVER 100 FT (?) THICK. STRONG RED PYRITE ALTERED CAP WITH BOXWORKS AFTER SULFIDE. TWO INTRUSIVE PORPHYRIES. 2ND INTRUSIVE WITH QUARTZ-SERICITE ALTERATION CARRIES MINERALIZATION.

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic
Significant No

Mining district

District name Warren

Ownership information

  • Type Owner-Operator
    Owner Phelps Dodge Corp.

Comments on the workings information

  • AS OF FEB. 1991 AREA IS IN DEVELOPMENT STAGE WITH PHELPS DODGE HOPING TO MAKE AN OPEN PIT CU PORPHYRY PROJECT.

Comments on development

  • MINE FEASIBILITY STUDIES ARE POSITIVE, MINE POTENTIAL LOOKS PROMISING. STARTUP PLANNED FOR APPROXIMATELY 1993. DEPOSIT IS AMMENABLE TO LEACHING.

Reference information

Bibliographic references

  • Deposit

    STAUDE, JOHN-MARK G., 1991, FIELD OBSERVATIONS.

  • Deposit

    ARIZONA DEPARTMENT OF MINES AND MINERAL RESOURCES, 1992, DIRECTORY OF ACTIVE MINES IN ARIZONA-1992.

  • Other Database

    CIMRI

General comments

Subject category Comment text
Deposit SIZE IS CURRENTLY BEING DETERMINED BY DRILLING (1991)

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-91 Staude, John-Mark G. U.S. Geological Survey

Beyond USGS

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

Operator history (post-MRDS)

MRDS records operators as of each record's last update (≤ 2019). Some of the operators listed here have since changed hands or dissolved:

  • Phelps Dodge Corp. — acquired by Subsidiary of Freeport-McMoRan (2007)
    Acquired by Freeport-McMoRan Copper & Gold in 2007 in what was then the largest mining-industry deal ever (~US$26 B).

Curated by qvyshift.com from publicly-reported M&A activity (SEC filings, press releases, USGS Mineral Yearbooks). Not authoritative — verify against primary sources before relying on it. The MSHA panel above is the current authoritative source for actively-permitted mines.

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.