bornite oxidation color

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Peacock Ore: Prettiest when Tarnished
Peacock Ore: Prettiest when Tarnished

The greens and yellows are from the oxidation of chalcopyrite, and the blues and purples are from the bornite The oxidation of the copper in the minerals results in ,...

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Bornite: Bornite mineral information and data - Mindatorg
Bornite: Bornite mineral information and data - Mindatorg

Important copper ore Typically found as massive metallic material, it has a copper-red color on fresh exposures which quickly tarnishes to an iridescent purple after exposure to air and moisture May be confused with tarnished ...

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