Anorthite Mineral Information photos and Facts, rare earth ore
Anorthite Mineral Facts: Chemical Formula: CaAl 2 Si 2 O 8 Calciumaluminum silicate, consisting of Silica %, alumina %, calcium %. Soda is usually present, in small amount, in the albite molecule, NaAlSi 3 O all Anorthite contains small traces of K2O, MgO and Fe2O3.