Villiaumite

Sodium fluoride
Found on http://www.translationdirectory.com/glossaries/glossary075.htm

Villiaumite

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 and should be handled with care. The red color is due to a broad absorption pe...
Found on http://en.wikipedia.org/wiki/Villiaumite
No exact match found