data_global _chemical_name_mineral 'Tausonite' loop_ _publ_author_name 'Mitchell R H' 'Chakhmouradian A R' 'Woodward P M' _journal_name_full 'Physics and Chemistry of Minerals' _journal_volume 27 _journal_year 2000 _journal_page_first 583 _journal_page_last 589 _publ_section_title ; Crystal chemistry of perovskite-type compounds in the tausonite-loparite series, (Sr1-2xNaxLax)TiO3 Sample: synchrotron XRD data ; _database_code_amcsd 0008445 _chemical_formula_sum '(Sr.5 Na.25 La.25) Ti O3' _cell_length_a 5.49755 _cell_length_b 5.49755 _cell_length_c 7.78810 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 235.380 _exptl_crystal_density_diffrn 5.084 _symmetry_space_group_name_H-M 'I 4/m c m' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2+x,1/2+y,1/2+z' '-y,-x,1/2+z' '1/2-y,1/2-x,+z' 'y,x,1/2-z' '1/2+y,1/2+x,-z' 'y,-x,-z' '1/2+y,1/2-x,1/2-z' '-y,x,z' '1/2-y,1/2+x,1/2+z' 'x,-y,1/2+z' '1/2+x,1/2-y,+z' '-x,y,1/2-z' '1/2-x,1/2+y,-z' 'x,y,-z' '1/2+x,1/2+y,1/2-z' '-x,-y,z' '1/2-x,1/2-y,1/2+z' 'y,x,1/2+z' '1/2+y,1/2+x,+z' '-y,-x,1/2-z' '1/2-y,1/2-x,-z' '-y,x,-z' '1/2-y,1/2+x,1/2-z' 'y,-x,z' '1/2+y,1/2-x,1/2+z' '-x,y,1/2+z' '1/2-x,1/2+y,+z' 'x,-y,1/2-z' '1/2+x,1/2-y,-z' '-x,-y,-z' '1/2-x,1/2-y,1/2-z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z _atom_site_occupancy _atom_site_U_iso_or_equiv SrA 0.00000 0.50000 0.25000 0.50000 0.00355 NaA 0.00000 0.50000 0.25000 0.25000 0.00355 LaA 0.00000 0.50000 0.25000 0.25000 0.00355 Ti 0.00000 0.00000 0.00000 1.00000 0.00279 O1 0.00000 0.00000 0.25000 1.00000 0.00329 O2 0.22480 0.72480 0.00000 1.00000 0.00329