data_global
_chemical_name_mineral 'Diaoyudaoite'
loop_
_publ_author_name
'Beevers C'
'Ross M'
_journal_name_full 'Zeitschrift fur Kristallographie'
_journal_volume 97 
_journal_year 1937
_journal_page_first 59
_journal_page_last 66
_publ_section_title
;
 The crystal structure of beta alumina Na2O(Al2O3)11
 _cod_database_code 1010017
;
_database_code_amcsd 0016956
_chemical_formula_sum 'Na Al11 O17'
_cell_length_a 5.584
_cell_length_b 5.584
_cell_length_c 22.45
_cell_angle_alpha 90
_cell_angle_beta 90
_cell_angle_gamma 120
_cell_volume 606.231
_exptl_crystal_density_diffrn      3.242
_symmetry_space_group_name_H-M 'P 63/m m c'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-x,-x+y,1/2+z'
  'x,x-y,1/2-z'
  '-x+y,-x,1/2-z'
  'x-y,x,1/2+z'
  '-y,-x,z'
  'y,x,-z'
  'y,-x+y,-z'
  '-y,x-y,z'
  'x-y,-y,1/2+z'
  '-x+y,y,1/2-z'
  'x,y,1/2-z'
  '-x,-y,1/2+z'
  'x,x-y,z'
  '-x,-x+y,-z'
  'x-y,x,-z'
  '-x+y,-x,z'
  'y,x,1/2+z'
  '-y,-x,1/2-z'
  '-y,x-y,1/2-z'
  'y,-x+y,1/2+z'
  '-x+y,y,z'
  'x-y,-y,-z'
  '-x,-y,-z'
loop_
_atom_site_label
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Na1   0.66667   0.33333   0.25000
Al1   0.00000   0.00000   0.00000
Al2   0.33333   0.66667   0.02200
Al3   0.33333   0.16667   0.10600
Al4   0.33333   0.66667   0.17800
O1   0.16667   0.33333   0.05000
O2   0.66667   0.33333   0.05000
O3   0.00000   0.00000   0.14400
O4   0.50000   0.50000   0.14400
O5   0.33333   0.66667   0.25000