Fluorite is also called fluorspar, fluorspar powder, and fluorite powder. It is a mineral, equiaxed crystal system, its main component is calcium fluoride (CaF2). Containing a lot of impurities, Ca is often replaced by rare earth elements such as Y and Ce. In addition, it also contains a small amount of Fe2O3, SiO2 and trace amounts of Cl, O3, He, etc.