Matlockite
Mineral PbFCl
Take care.
- Contains lead: Wash your hands after handling it, keep it away from children, and don't make dust.
About it
Thin, square tabular crystals of lead fluoride chloride, colourless to yellowish and very heavy. Named for Matlock in Derbyshire, England.
- Type
- Mineral
- Group
- Halide
- Formula
- PbFCl
- Hardness (Mohs)
- 2.5–3
- Specific gravity
- 7.1–7.2
- Streak
- white
- Lustre
- adamantine (diamond-like), pearly
- Crystal system
- Tetragonal
- Colours
- colourless, yellow, greenish
- Transparency
- transparent, translucent
- Cleavage and fracture
- perfect basal
Typical values: real specimens vary. For more, see mindat.org.