Citation: Lager, G. A.; Downs, R. T.; Origlieri, M. J.; Garoutte, R. (2002). High-pressure single-crystal X-ray diffraction study of katoite hydrogarnet: Evidence for a phase transition from Ia-3d - I-43d symmetry at 5 GPa Sample: P = 4.21 GPa. American Mineralogist, 87, pp. 642-647.