Pyrophanite Ko J, Prewitt C T Physics and Chemistry of Minerals 15 (1988) 355-362 High-pressure phase transition in MnTiO3 from the ilmenite to the LiNbO3 structure Note: Represents the high pressure phase of pyrophanite Note: Sample synthesized at 60 kbar and 1300 C _database_code_amcsd 0007448 5.205 5.205 13.700 90 90 120 R3c atom x y z Biso B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3) Mn 0 0 .27616 .69 .00692 .00692 .00125 .00346 0 0 Ti 0 0 0 .46 .00523 .00523 .00069 .002625 0 0 O .0601 .3427 .0634 .60 .0063 .0061 .00103 .0031 -.0005 -.0004