Cosalite
Mineral Pb2Bi2S5
Take care.
- Contains lead: Wash your hands after handling it, keep it away from children, and don't make dust.
About it
Lead-grey needles and fibrous masses of lead-bismuth sulfide in ore veins and skarns. Named for Cosalá, Sinaloa, Mexico.
- Type
- Mineral
- Group
- Sulfosalt
- Formula
- Pb2Bi2S5
- Hardness (Mohs)
- 2.5–3
- Specific gravity
- 6.3–6.8
- Streak
- black
- Lustre
- metallic
- Crystal system
- Orthorhombic
- Colours
- lead grey, steel grey
- Transparency
- opaque
- Cleavage and fracture
- indistinct; uneven fracture
Typical values: real specimens vary. For more, see mindat.org.