A mineral, essentially CaF2 , that is often fluorescent in ultraviolet light and occurs in light green, blue, yellow, brown, and colorless forms.
A crystalline mineral, CaF2, with perfect cleavage, used as a flux, in glassmaking, etc. and as the principal source of fluorine; calcium fluoride.
A transparent to translucent mineral occurring in many colors, especially yellow and purple, and usually in cube-shaped crystals with octahedral cleavage. It is found in sedimentary rocks and in ore deposits within igneous rocks. It is often fluorescent in ultraviolet light. Chemical formula: CaF2.