USGS Mineral Resources Data System
Type: Historical mine record
Supports:
- mine identity
- development status
- commodities
- underground eligibility evidence
Arizona · Greenlee County
Morenci Mine
Unconfirmed Copper Mixed Underground / Surface
Key facts
- State
- Arizona
- County
- Greenlee
- Mining district
- Copper Mountain District
- Development status
- Producer
- Mine type
- Mixed underground / surface
- Primary commodity
- Copper
- Verification
- Unconfirmed
Also known as
- Morenci-Metcalf, Clay Ore Body
Mine Location
Approximate AreaDocumented underground workings
Source classification: Underground operation documented
Specific physical workings are not yet documented in discrete records.
Historical mapped workings
USGS historical topographic mapping. Features may no longer exist.
- 24 adit symbols
View individual source records (2)
Every underlying record used to build the summary above, for research/verification use.
- USGS MRDS working type: Surface/Underground
- MRDS work_type documents underground workings: Surface/Underground · work_type
Verification
Unconfirmed
Source records support underground workings, but UndergroundMines has not yet independently verified this mine.
Why it's listed
Source records document both underground and surface mining.
History & operations
Historical record
- Development status: Producer
Operators / organizations
- Freeport-McMoran Copper and Gold Inc · Historical operator · 2009
- Phelps Dodge Corp. · Historical operator / Source-reported owner · 1994
- Sumitomo Metal Mining Arizona Inc. · Source-reported owner · 1994
Commodities & minerals
- Copper · primary
- Gold
- Silver
- Molybdenum
- Gemstone
- REE
- Zinc
- Uranium
- Lead
- Talc-Soapstone
- Gypsum-Anhydrite
- Garnet
Reported minerals
- Allophane
- Alunite
- Goethite
- Gypsum
- Hematite
- Jarosite
- Magnetite
- Nontronite
View all 29 reported minerals
- Allophane
- Alunite
- Goethite
- Gypsum
- Hematite
- Jarosite
- Magnetite
- Nontronite
- Opal
- Talc
- Tremolite
- Andradite
- Argentite
- Azurite
- Chalcocite
- Chalcopyrite
- Chrysocolla
- Copper
- Covellite
- Cuprite
- Galena
- Gold
- Malachite
- Molybdenite
- Pyrite
- Sphalerite
- Stromeyerite
- Tenorite
- Turquoise
Access & recent conditions
- Land
- private property
- Source
- Active Freeport-McMoRan Morenci operations public information
- Access information last checked
- August 9, 2026
Community reports
No community field reports yet.
I Visited This MineSources & evidence
USGS Historical Topographic Mine Features
Type: Historical mapped physical features
Dataset: DOI 10.5066/P9TAALR6
Supports:
- mapped adit symbols (24)
Historical mapped features may no longer exist.
Arizona Geological Survey / ADMMR
Type: Historical mine documents
Record: 2 historical documents
Supports:
- historical mine identity
- historical mine documentation
View 2 citations
- Morenci Mine (2003)
- Morenci (1966)
Historical documentation does not imply current access or open workings.
Active Freeport-McMoRan Morenci operations public information
Type: Access / land-management source
Supports:
- access / lawful visit information
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