Skip to content


Occurs in Pinal County. Common in Arizona.

Chemical Formula: Cu5FeS4

Specific Gravity: 4.9-5.3

Luster: Metallic

Hardness: 3

Bornite, also known as peacock ore, is a copper iron sulfide mineral. It has a metallic Luster and exhibits iridescent colors, resembling the feathers of a peacock.

Bornite is an important copper mineral commonly found in Arizona copper deposits. Bornite occurs alongside chalcopyrite and other copper-bearing minerals.

Next Pinal County mineral: Braunite