Loparite 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 = 0.50 _database_code_amcsd 0008456 5.4820 5.4820 13.4104 90 90 120 R-3c atom x y z occ NaA 0 0 .25 .50 LaA 0 0 .25 .50 Ti 0 0 0 O .539 0 .25