Plagionite
Mineral Pb5Sb8S17
Take care.
- Contains lead: Wash your hands after handling it, keep it away from children, and don't make dust.
- Toxic: Wash your hands after handling it, don't lick or taste it, and don't make dust.
About it
Blackish lead-grey thick tabular crystals of lead-antimony sulfide. Its name comes from the Greek for oblique, after its crystals; first described from Wolfsberg in the Harz, Germany.
- Type
- Mineral
- Group
- Sulfosalt, plagionite group
- Formula
- Pb5Sb8S17
- Hardness (Mohs)
- 2.5
- Specific gravity
- 5.5–5.6
- Streak
- blackish grey
- Lustre
- metallic
- Crystal system
- Monoclinic
- Colours
- blackish lead grey
- Transparency
- opaque
- Cleavage and fracture
- perfect in one direction
Typical values: real specimens vary. For more, see mindat.org.