Omega Mine

The Omega Mine is a copper mine located in Pima county, Arizona at an elevation of 5,098 feet.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Site Name

Primary: Omega Mine
Secondary: Omega Tunnel
Secondary: Omega Extension

Commodity

Primary: Copper
Secondary: Silver
Secondary: Lead
Tertiary: Zinc
Tertiary: Manganese
Tertiary: Gold
Tertiary: Molybdenum
Tertiary: Tungsten

Location

State: Arizona
County: Pima
District: Helvetia-Rosemont District

Land Status

Land ownership: National Forest
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.

Holdings

Not available

Workings

Type: Surface/Underground

Ownership

Not available

Production

Year: 1920
Time Period: 1880-1920
Material type: CU AG ORE
Description: Cp_Grade: ^6% Cu, 1 Oz/T Ag, Minor Pb

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1877
Year Last Production: 1920
Discovery Method: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Sonoran Desert

Mineral Deposit Model

Not available

Orebody

Form: IRREGULAR

Structure

Type: R
Description: Homoclinal, Tilting And Broad Open Folds In S; Extensive Faulting I N N.

Type: L
Description: Wnw Striking Thrust Fault Zone, Permeable Fracture Zones

Alterations

Alteration Type: L
Alteration Text: Epidotized And Altered Limestone

Rocks

Name: Diorite
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene

Name: Diorite
Role: Associated
Age Type: Host Rock
Age Young: Pennsylvanian

Analytical Data

Not available

Materials

Ore: Chalcopyrite
Ore: Pyrite
Ore: Powellite
Ore: Sphalerite
Gangue: Sericite

Comments

Comment (Deposit): THIS REPORT REPRESENTS A MERGER OF ORIGINAL RECORD M05179 WITH REC ORD M030534 OF JAN WILT IN MOLYBDENUM FILE, CONTACT PERSON T.G. THEODO RE, USGS ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Comment (Production): FIRST CU PRODUCED IN ANY CONSIDERABLE QUANTITY IN PIMA COUNTY CAME FROM THIS MINE

Comment (Development): OPERATORS INCLUDED L. ZECKENDORF, ROBERT MCKAY

Comment (Workings): TUNNELS, SHAFTS, OPEN CUTS

Comment (Geology): MN OXIDES MAY ACTUALLY BE CRUSHED MAGNETITE

References

Reference (Deposit): SCHRADER, 1915, USGS BULL 582

Reference (Deposit): ABM, 1971, FIELDNOTES V1, NO 2

Reference (Deposit): DREWES, 1971, USGS MAP I-613

Reference (Deposit): CREASEY & QUICK, 1955, USGS BULL 1027 F

Reference (Deposit): KEITH, 1974, ABM BULL 189

Reference (Deposit): JOHNSON, 1941, PHD THESIS, UNIV OF AZ, 111 P.

Reference (Production): KEITH, 1974; USBM FILE DATA

Arizona Gold

"Where to Find Gold in Arizona" looks at the density of modern placer mining claims along with historical gold mining locations and mining district descriptions to determine areas of high gold discovery potential in Arizona. Read more: Where to Find Gold in Arizona.