a crystalline mineral, CaF, with perfect cleavage, used as a flux, in glassmaking, etc. and as the principal source of fluorine; calcium fluoride
Origin of fluoritefluor(o)- + -ite
A mineral, essentially CaF2, that is often fluorescent in ultraviolet light and occurs in light green, blue, yellow, brown, and colorless forms. Also called fluor . Also called fluorspar .