ID: 45
Chemical Formula
PbCuSbS₃
Hardness (Mohs)
2.5 - 3
Crystal System
Orthorhombic
Streak
Steel-gray
Luster
Metallic
Diaphaneity
Opaque
Color
Density
5.83
It's sometimes called "wheel ore" because its twinning often results in distinctive cogwheel-like crystal forms.