USGS Mineral Resources Data System
Type: Historical mine record
Supports:
- mine identity
- development status
- commodities
- underground eligibility evidence
Arizona · Pima County
New Cornelia Ajo
Unconfirmed Copper Mixed Underground / Surface
Key facts
- State
- Arizona
- County
- Pima
- Mining district
- Ajo District
- Development status
- Past Producer
- Mine type
- Mixed underground / surface
- Primary commodity
- Copper
- Verification
- Unconfirmed
Also known as
- New Cornelia Mine, Ajo Mine
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.
- 1 shaft symbol
- 1 adit symbol
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, 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: Past Producer
Operators / organizations
- J.B. Johnson · Historical operator
- Phelps Dodge Corp, 2600 N Central Ave, Phoenix, Az 85004 · Historical operator · 1987
Commodities & minerals
- Copper · primary
- Zinc
- Silver
- Molybdenum
- Gold
- Semiprecious Gemstone
- Iron
- Niobium (Columbium)
- Titanium
- Rubidium
Reported minerals
- Kaolin
- Quartz
- Talc
- Bornite
- Chalcocite
- Chalcopyrite
- Chrysocolla
- Covellite
View all 19 reported minerals
- Kaolin
- Quartz
- Talc
- Bornite
- Chalcocite
- Chalcopyrite
- Chrysocolla
- Covellite
- Gold
- Hematite
- Ilmenite
- Magnetite
- Malachite
- Molybdenite
- Pyrite
- Rutile
- Shattuckite
- Silver
- Tenorite
Access & recent conditions
- Land
- unknown
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 shaft symbols (1)
- mapped adit symbols (1)
Historical mapped features may no longer exist.
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Documented shaft evidence
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