Fluorite
Pronunciation : Flu"or*ite
Part of Speech : n.
Definition : Defn: Calcium fluoride, a mineral of many different colors, white, yellow, purple, green, red, etc., often very beautiful, crystallizing commonly in cubes with perfect octahedral cleavage; also massive. It is used as a flux. Some varieties are used for ornamental vessels. Also called fluor spar, or simply fluor.
(Min.)
Source : Webster's Unabridged Dictionary, 1913