Ontario Mine

The Ontario Mine is a gold, silver, and copper mine located in Cochise county, Arizona at an elevation of 4,600 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

Name: Ontario Mine  

State:  Arizona

County:  Cochise

Elevation: 4,600 Feet (1,402 Meters)

Commodity: Gold, Silver, Copper

Lat, Long: 31.76889, -109.81528

Map: View on Google Maps

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.


Satelite image of the Ontario Mine

Ontario Mine MRDS details

Site Name

Primary: Ontario Mine


Commodity

Primary: Gold
Primary: Silver
Primary: Copper


Location

State: Arizona
County: Cochise
District: Turquoise District


Land Status

Land ownership: Private
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

Not available


Ownership

Owner Name: Great Western Copper Co.


Production

Not available


Deposit

Record Type: Site
Operation Category: Past Producer
Deposit Type: Replacement
Operation Type: Unknown
Year First Production: 1911
Year Last Production: 1920
Years of Production:
Organization:
Significant: N
Deposit Size: S


Physiography

General Physiographic Area: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Mexican Highland


Mineral Deposit Model

Not available


Orebody

Form: LENTICULAR, BELT


Structure

Not available


Alterations

Not available


Rocks

Name: Quartz Monzonite
Role: Associated
Age Type: Associated Rock
Age Young: Paleocene

Name: Quartz Monzonite
Role: Associated
Age Type: Host Rock
Age Young: Late Cambrian


Analytical Data

Not available


Materials

Ore: Copper
Ore: Gold
Ore: Silver


Comments

Comment (Location): E. CENTRAL SEC. 20. UTM EST.

Comment (Production): A FEW TENS OF TONS OF ORE PRODUCED, 1911 AND 1920.

Comment (Development): OPERATORS INCLUDED D.K. BROWN

Comment (Deposit): COPPER CARBONATES AND SULFIDES IN BEDDED REPLACEMENT DEPOSITS IN CAMBRIAN LIMESTONE.

Comment (Workings): SHALLOW WORKINGS.


References

Reference (Deposit): KEITH, S.B., 1973, ARIZONA BUREAU OF MINES BULLETIN 187, P. 84.

Reference (Deposit): ABM BULL 123, 1927

Reference (Production): KEITH, 1973, ARIZ. BUR. OF MINES BULL. 187.


Arizona Gold

Where to Find Gold in Arizona

"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.