data_9006870
_chemical_name 'Loparite'
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: x = 0.30
;
_chemical_formula_sum '(Sr.4 Na.3 La.3) Ti O3'
_cell_length_a 5.5025
_cell_length_b 5.5025
_cell_length_c 7.7701
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 235.259
_symmetry_space_group_name_H-M 'I 4/m c m'
loop_
_symmetry_equiv_pos_as_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
SrA   0.00000   0.50000   0.25000   0.40000
NaA   0.00000   0.50000   0.25000   0.30000
LaA   0.00000   0.50000   0.25000   0.30000
Ti   0.00000   0.00000   0.00000   1.00000
O1   0.00000   0.00000   0.25000   1.00000
O2   0.22900   0.72900   0.00000   1.00000