data_global
_chemical_name_mineral 'Loparite-(Ce)'
loop_
_publ_author_name
'Gaertner H'
_journal_name_full 'Neues Jahrbuch fur Mineralogie, Geologie und Palaeontologie. Beilage'
_journal_volume 61 
_journal_year 1930
_journal_page_first 1
_journal_page_last 30
_publ_section_title
;
 Die Kristallstrukturen von Loparit und Pyrochlor
 _cod_database_code 1011000
;
_database_code_amcsd 0017915
_chemical_formula_sum '(Na.5 Ce.3 Ca.2) (Ti.8 Nb.2) O3'
_cell_length_a 3.854
_cell_length_b 3.854
_cell_length_c 3.854
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 90
_cell_volume 57.245
_exptl_crystal_density_diffrn      4.828
_symmetry_space_group_name_H-M 'P m 3 m'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  'z,-x,y'
  '-y,z,-x'
  'x,-y,z'
  '-z,x,-y'
  'y,-z,x'
  '-x,y,-z'
  'x,-z,-y'
  '-z,y,x'
  'y,-x,-z'
  '-x,z,y'
  'z,-y,-x'
  '-y,x,z'
  'x,z,y'
  '-z,-y,-x'
  'y,x,z'
  '-x,-z,-y'
  'z,y,x'
  '-y,-x,-z'
  'z,x,-y'
  '-y,-z,x'
  'x,y,-z'
  '-z,-x,y'
  'y,z,-x'
  '-x,-y,z'
  '-z,x,y'
  'y,-z,-x'
  '-x,y,z'
  'z,-x,-y'
  '-y,z,x'
  'x,-y,-z'
  '-x,z,-y'
  'z,-y,x'
  '-y,x,-z'
  'x,-z,y'
  '-z,y,-x'
  'y,-x,z'
  '-x,-z,y'
  'z,y,-x'
  '-y,-x,z'
  'x,z,-y'
  '-z,-y,x'
  'y,x,-z'
  '-z,-x,-y'
  'y,z,x'
  '-x,-y,-z'
  'z,x,y'
  '-y,-z,-x'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
_atom_site_occupancy
Na1   0.00000   0.00000   0.00000   0.50000
Ce1   0.00000   0.00000   0.00000   0.30000
Ca1   0.00000   0.00000   0.00000   0.20000
Ti1   0.50000   0.50000   0.50000   0.80000
Nb1   0.50000   0.50000   0.50000   0.20000
O1   0.50000   0.50000   0.00000   1.00000