Katoite Lager G A, Downs R T, Origlieri M J, Garoutte R American Mineralogist 87 (2002) 642-647 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 = 6.00 GPa _database_code_amcsd 0002795 12.2145 12.2145 12.2145 90 90 90 Ia-3d atom x y z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) Ca .125 0 .25 .0040 .0015 .0015 0 0 -.0004 Al 0 0 0 .0019 .0019 .0019 .0002 .0002 .0002 SiT .375 0 .25 0 OH .0310 .0527 .6423 .0026 .0022 .0019 -.0005 .0002 -.0004