USGS Mineral Resources Data System
Type: Historical mine record
Supports:
- mine identity
- development status
- commodities
- underground eligibility evidence
Arizona · Pima County
Leader Mine
Unconfirmed Copper Underground
Key facts
- State
- Arizona
- County
- Pima
- Mining district
- Helvetia-Rosemont District
- Development status
- Past Producer
- Mine type
- Underground
- Primary commodity
- Copper
- Verification
- Unconfirmed
Also known as
- Copper Fend, Copper World, Owasko Claims
Mine Location
Approximate AreaDocumented underground workings
Mindat locality description
‡Ref.: Guild, F.N. (1907) The composition of molybdite from Arizona: American Journal of Science, 4th series: 23: 455-456. Schrader, F.C. & J.M. Hill (1909), Some occurrences of molybdenite in the Santa Rita and Patagonia Mountains, Arizona, USGS …
Historical mapped workings
USGS historical topographic mapping. Features may no longer exist.
- 7 shaft symbols
- 29 adit symbols
View individual source records (2)
Every underlying record used to build the summary above, for research/verification use.
- USGS MRDS working type: Underground
- MRDS work_type documents underground workings: Underground · work_type
Verification
Unconfirmed
Source records support underground workings, but UndergroundMines has not yet independently verified this mine.
Why it's listed
USGS source data documents underground workings for this record.
History & operations
Historical record
- Development status: Past Producer
Operators / organizations
- Mrs. Lon Blankenship · Source-reported owner
Commodities & minerals
Reported minerals
- Epidote
- Garnet
- Magnetite
- Quartz
- Bornite
- Chalcocite
- Chalcopyrite
- Copper
View all 28 reported minerals
- Epidote
- Garnet
- Magnetite
- Quartz
- Bornite
- Chalcocite
- Chalcopyrite
- Copper
- Molybdenite
- Powellite
- Scheelite
- Sphalerite
- Wollastonite
- Bornite
- Chalcocite
- Chalcopyrite
- Copper-bearing Pyrite
- Epidote
- Garnet Group
- Limonite
- Magnetite
- Molybdenite
- Powellite
- Pyrite
- Scheelite
- Sphalerite
- Tremolite
- Wollastonite
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 (7)
- mapped adit symbols (29)
Historical mapped features may no longer exist.
Mindat
Type: Mineralogical locality database
Record: Mindat Locality: 36131
Supports:
- locality identity
- reported minerals (15)
A Mindat locality match does not by itself establish underground workings.
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