Image of Bournonite
Bournonite

ID: 45

Bournonite

Chemical Formula

PbCuSbS₃

Hardness (Mohs)

2.5 - 3

Crystal System

Orthorhombic

Streak

Steel-gray

Luster

Metallic

Diaphaneity

Opaque

Color

Steel-gray

Density

5.83

Fun Facts

It's sometimes called "wheel ore" because its twinning often results in distinctive cogwheel-like crystal forms.