Araujo, D.P., et al. “The Complete Phlogopite-Tetraferriphlogopite Series in the Catalão-I and -II Carbonatite Complexes, Brazil”. International Kimberlite Conference: Extended Abstracts, vol. 7, no. 1, Apr. 1998, pp. 29-31, doi:10.29173/ikc2621.