data_stdin
_audit_creation_method 'critic2-4f1eba8'
_cell_length_a         5.1243847544
_cell_length_b         5.1243847544
_cell_length_c         5.1243847544
_cell_angle_alpha        55.2730
_cell_angle_beta        55.2730
_cell_angle_gamma        55.2730
_cell_volume            84.697235
_space_group_crystal_system trigonal
_space_group_IT_number 167
_space_group_name_H-M_alt 'R-3c'
_space_group_name_Hall '-R 3 2"c'
loop_
_space_group_symop_operation_xyz
  'x,y,z'
  '-x,-y,-z'
  'y,z,x'
  '-y,-z,-x'
  'z,x,y'
  '-z,-x,-y'
  '-1/2-z,-1/2-y,-1/2-x'
  '-1/2+z,-1/2+y,-1/2+x'
  '-1/2-x,-1/2-z,-1/2-y'
  '-1/2+x,-1/2+z,-1/2+y'
  '-1/2-y,-1/2-x,-1/2-z'
  '-1/2+y,-1/2+x,-1/2+z'
loop_
_atom_site_label
_atom_site_type_symbol
_atom_site_fract_x
_atom_site_fract_y
_atom_site_fract_z
Al     Al     0.35222000000000     0.35222000000000     0.35222000000000
O      O      0.94424000000000     0.55576000000000     0.25000000000000
