1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

(Facility) Ajo Copper Smelter

Plant in Pima county in Arizona, United States with commodity Copper
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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. Nearby scientific data
  8. Economic information about the deposit and operations
  9. Land status
  10. Ownership information
  11. Links to other databases
  12. Bibliographic references
  13. Reporter information

Geologic information

Identification information

Deposit ID 10210841
MAS/MILS ID 0040190334
Record type Site
Current site name (Facility) Ajo Copper Smelter
Alternate or previous names New Cornelia Smelter

Geographic coordinates

Point of reference Plant
Geographic coordinates: -112.85824, 32.3712 (WGS84)
Elevation 561
Location accuracy 100(meters)

Site location context

Political divisions (FIPS codes)

Pima(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Ajo South(quadrangle 1:24,000 scale)

Ajo(quadrangle 1:100,000 scale)

Ajo(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Tenmile Wash(hydrologic unit)

Lower Gila(hydrologic accounting unit)

Lower 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 012 S 006 W 23 N2 Arizona

Commodities

Commodity Importance
Copper Primary

Nearby scientific data

Plant (1) -112.85824, 32.3712
ListMap

Economic information

Economic information about the deposit and operations

Operation type Processing Plant
Development status Plant
Commodity type Metallic
Significant No
Plant type Smelter

Land status

Ownership category Private

Ownership information

  • Type Owner-Operator
    Owner Phelps Dodge Corp.
    Interest 100
    Home office New York
    Year 1979

Reference information

Bibliographic references

  • Deposit

    USGS AJO QUADRANGLE 1963

Reporter information

Type Date Name Affiliation Comment
Reporter 09-AUG-93 ADMR U.S. Bureau of Mines

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.