USGS Mineral Resources Data System
Type: Historical mine record
Supports:
- mine identity
- development status
- commodities
- underground eligibility evidence
Arizona · Pima County
Omega Mine
Unconfirmed Copper Mixed Underground / Surface
Key facts
- State
- Arizona
- County
- Pima
- Mining district
- Helvetia-Rosemont District
- Development status
- Past Producer
- Mine type
- Mixed underground / surface
- Primary commodity
- Copper
- Verification
- Unconfirmed
Also known as
- Omega Tunnel, Omega Extension
Mine Location
Approximate AreaDocumented underground workings
Mindat locality description
A former small surface and underground Cu-Ag-Pb-Zn-Au-Mn-W-Mo mine located in West-central sec. 24, T18S, R15E, on the steep southwest slope of Monument Mountain, nearly 1.5 miles (2.41 km) east of Helvetia and 0.25 mile (ca. 402 m) south of the Isle R…
Historical mapped workings
USGS historical topographic mapping. Features may no longer exist.
- 7 shaft symbols
- 30 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: Past Producer
Commodities & minerals
Reported minerals
- Sericite
- Chalcopyrite
- Powellite
- Pyrite
- Sphalerite
- Actinolite
- Aurichalcite
- Azurite
View all 40 reported minerals
- Sericite
- Chalcopyrite
- Powellite
- Pyrite
- Sphalerite
- Actinolite
- Aurichalcite
- Azurite
- Brochantite
- Calcite
- Cerussite
- Chalcanthite
- Chalcedony
- Chalcocite
- Chalcopyrite
- Chlorargyrite
- Chrysocolla
- commodity:Copper
- commodity:Gold
- commodity:Lead
- commodity:Manganese
- commodity:Molybdenum
- commodity:Silver
- commodity:Tungsten
- commodity:Zinc
- Cuprite
- Cuprotungstite
- Epidote
- Fluorite
- Fornacite
- Galena
- Garnet Group
- Goethite
- Gypsum
- Hematite
- Hemimorphite
- Lepidocrocite
- Libethenite
- Limonite
- Magnetite
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 (30)
Historical mapped features may no longer exist.
Mindat
Type: Mineralogical locality database
Record: Mindat Locality: 5437
Supports:
- locality identity
- reported minerals (35)
A Mindat locality match does not by itself establish underground workings.
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