Fluorite (mineral)
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.
Fluorite in nature often shows bright colors, some of which can emit fluorescence. Mohs hardness of 4, lower than steel, easy to scratch, brittle, sweet and astringent, non-toxic. Melting point: 1270-1350°C. Density: 3.18g/cm3, refractive index: 1.434.
