Bornite
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Bornite, also known as peacock ore, is a sulfide mineral with chemical composition Cu₅FeS₄ that crystallizes in the orthorhombic system. Wikipedia
Nickname: peacock copper
Cleavage: Poor on
Color: Copper red, bronze brown, purple
Crystal class: Dipyramidal (mmm); H-M symbol: (2/m 2/m 2/m)
Crystal habit: Granular, massive, disseminated – Crystals pseudocubic, dodecahedral, octahedral
Crystal system: Orthorhombic
Fracture: Uneven to subconchoidal