Fluorite chemical composition is CaF2, and the crystal belongs to an equiaxed halide mineral. Blue or purple fluorescent light is emitted under ultraviolet light, cathode ray irradiation or heating, and hence the name. Crystals are often interspersed twins in cubes, octahedrons or cubes, and the aggregates are granular or massive. Light green, light purple or colorless and transparent, sometimes rose red, streak white, glass luster, transparent to opaque.
China is one of the countries having the most fluorite minerals in the world and accounts for 35% of the world's reserves. Fluorite can be used as a flux in the metallurgical industry and as a raw material for the manufacture of hydrofluoric acid in the chemical industry.