Jamesonite
ID: 65
Jamesonite
Chemical Formula
Pb₄FeSb₆S₁₄
Hardness (Mohs)
2.5 - 3
Crystal System
Monoclinic
Streak
Black
Luster
Metallic
Diaphaneity
Opaque
Color
Dark gray to black
Crystal Habit / Mode of Occurrence
Acicular (needle-like) crystals, often forming fibrous or feathery aggregates. Can also be massive.
Fun Facts
Jamesonite is often found in association with other sulfide minerals like galena, sphalerite, and pyrite. Its fibrous habit can make it look quite distinctive.