Cylindrite
Mineral FePb3Sn4Sb2S14
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
Lead-grey sulfosalt that grows as rolled-up cylinders and tubes, a habit seen in few other minerals. Almost all specimens come from Poopó, Bolivia.
- Type
- Mineral
- Group
- Sulfosalt
- Formula
- FePb3Sn4Sb2S14
- Hardness (Mohs)
- 2.5
- Specific gravity
- 5.4–5.5
- Streak
- black
- Lustre
- metallic
- Crystal system
- Triclinic
- Colours
- blackish lead grey
- Transparency
- opaque
- Cleavage and fracture
- none; grows as rolled cylinders
Typical values: real specimens vary. For more, see mindat.org.