Cotunnite
Mineral PbCl2
Take care.
- Contains lead: Wash your hands after handling it, keep it away from children, and don't make dust.
About it
Colourless to white needles and crusts of lead chloride, deposited by volcanic gases at Vesuvius, where it was first found; also forms on lead slags in seawater.
- Type
- Mineral
- Group
- Halide
- Formula
- PbCl2
- Hardness (Mohs)
- 1.5–2.5
- Specific gravity
- 5.8–5.9
- Streak
- white
- Lustre
- adamantine (diamond-like), silky
- Crystal system
- Orthorhombic
- Colours
- colourless, white, pale yellow, pale green
- Transparency
- transparent, translucent
- Cleavage and fracture
- perfect in one direction
Typical values: real specimens vary. For more, see mindat.org.