Fluorspar is the trade name for the mineral fluorite, which is composed of calcium fluoride.
It is a compound of calcium phosphate with calcium fluoride or chloride.
calcium fluoride must be first converted into sulphate by evaporation in a platinum dish with sulphuric acid.
In the formation of healthy bones and teeth, calcium fluoride is essential.
For example, calcium fluoride gives a brilliant yellow light when used in the carbons of the "flame" arc.
The results of the reaction are caustic soda, sodium aluminate, and calcium fluoride.
Fluorine is frequently met with as calcium fluoride or fluor-spar (CaF2).
A number of the fluorides are known, but only one of them, calcium fluoride (CaF2), is of importance.