氟鹽
Villiaumite is a rare halide mineral composed of sodium fluoride, NaF. It is very soluble in water and some specimens fluoresce under long and short wave ultraviolet light. It has a Mohs hardness of 2.5 and is usually red, pink, or orange in color. It is toxic to humans.
Key facts
- Mineral.boxbgcolor
- c55e35
- Mineral.name
- Villiaumite
- Mineral.category
- Halide mineral
- Mineral.image
- Villiaumite-t5128a.jpg
- Mineral.imagesize
- 260px
- Mineral.formula
- NaF
- Mineral.strunz
- 3.AA.20
- Mineral.system
- Cubic
- Mineral.class
- Hexoctahedral (mm) H-M symbol: (4/m 2/m)
- Mineral.symmetry
- Fmm (No. 225)
- Mineral.unit cell
- a = 4.63 Å; Z = 4
- Mineral.color
- Carmine-red, lavender-pink to light orange