Tausonite Mitchell R H, Chakhmouradian A R, Woodward P M Physics and Chemistry of Minerals 27 (2000) 583-589 Crystal chemistry of perovskite-type compounds in the tausonite-loparite series, (Sr1-2xNaxLax)TiO3 Sample: x = 0.15 _database_code_amcsd 0008449 5.5116 5.5116 7.8036 90 90 90 I4/mcm atom x y z occ SrA 0 .5 .25 .70 NaA 0 .5 .25 .15 LaA 0 .5 .25 .15 Ti 0 0 0 O1 0 0 .25 O2 .239 .739 0