Keystone Mine

The Keystone Mine is a silver, copper, and zinc mine located in Cochise county, Arizona at an elevation of 4,951 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: Keystone Mine
Secondary: Hagerman
Secondary: Bannon Group

Commodity

Primary: Silver
Primary: Copper
Primary: Zinc
Tertiary: Gold
Tertiary: Molybdenum
Tertiary: Tungsten

Location

State: Arizona
County: Cochise
District: Cochise District

Land Status

Land ownership: Unknown
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: Coronado Copper And Zinc Co.
Info Year: 1973

Owner Name: Aztec Mining And Development Co.
Info Year: 1973

Owner Name: Keystone Copper Mining Co.
Info Year: 1973

Owner Name: Black Prince Copper Co.
Info Year: 1973

Production

Not available

Deposit

Record Type: Site
Operation Category: Past Producer
Operation Type: Underground
Mining Method: Unknown
Year First Production: 1917
Discovery Year: 1908
Discovery Method: Ore-Mineral In Place
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

Not available

Structure

Not available

Alterations

Not available

Rocks

Not available

Analytical Data

Not available

Materials

Unknown: Chalcopyrite
Unknown: Molybdenite
Unknown: Pyrite
Unknown: Scheelite
Unknown: Silver
Unknown: Bornite
Unknown: Sphalerite
Unknown: Gold

Comments

Comment (Geology): STRONG GARNETIZATION PRESENT.

References

Reference (Deposit): KEITH S B 1973 ARIZ BUR MINES BULL 187 P 57

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.