data_Al2O3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   2.97
_cell_length_b   9.08
_cell_length_c   3.78
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Al2O3
_chemical_formula_sum   'Al4 O6'
_cell_volume   101.89
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Al  Al0  1  0.0  0.97  0.86  1.0
  Al  Al1  1  0.0  0.37  0.87  1.0
  Al  Al2  1  0.49  0.71  0.76  1.0
  Al  Al3  1  0.49  0.11  0.75  1.0
  O  O4  1  0.0  0.01  0.75  1.0
  O  O5  1  0.49  0.06  0.86  1.0
  O  O6  1  0.0  0.46  0.72  1.0
  O  O7  1  0.49  0.57  0.98  1.0
  O  O8  1  0.0  0.5  0.87  1.0
  O  O9  1  0.49  0.61  0.83  1.0

data_Al2O3
_symmetry_space_group_name_H-M   Pm
_cell_length_a   3.78
_cell_length_b   2.97
_cell_length_c   9.08
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   6
_chemical_formula_structural   Al2O3
_chemical_formula_sum   'Al4 O6'
_cell_volume   101.89
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  'x, -y, z'
loop_
 _atom_site_type_symbol
 _atom_site_label
 _atom_site_symmetry_multiplicity
 _atom_site_fract_x
 _atom_site_fract_y
 _atom_site_fract_z
 _atom_site_occupancy
  Al  Al0  1  0.13  0.0  0.63  1.0
  Al  Al1  1  0.14  0.0  0.03  1.0
  Al  Al2  1  0.24  0.5  0.29  1.0
  Al  Al3  1  0.25  0.5  0.89  1.0
  O  O4  1  0.02  0.5  0.43  1.0
  O  O5  1  0.13  0.0  0.5  1.0
  O  O6  1  0.14  0.5  0.94  1.0
  O  O7  1  0.17  0.5  0.39  1.0
  O  O8  1  0.25  0.0  0.99  1.0
  O  O9  1  0.28  0.0  0.54  1.0

Al Al Al Al O O O O O O
Al Al Al Al O O O O O O 0 4 o + o 1 6 o o o 1 8 o o o 2 9 o o o 3 5 o o o 6 8 o o o 7 9 o o o 