Image of Bornite
Bornite

ID: 86

Bornite

Chemical Formula

Cu₅FeS₄

Hardness (Mohs)

3

Crystal System

Orthorhombic

Streak

black

Luster

Metallic

Diaphaneity

Opaque

Color

brown

Fun Facts

Bornite's vibrant, rainbow-like tarnish makes it look like a piece of art straight from nature! It's often called 'peacock ore'.