data_SiO2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.02
_cell_length_b   8.26
_cell_length_c   5.1
_cell_angle_alpha   90.0
_cell_angle_beta   118.37
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SiO2
_chemical_formula_sum   'Si4 O8'
_cell_volume   186.19
_cell_formula_units_Z   4
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
  Si  Si0  1  0.09  0.75  0.58  1.0
  Si  Si1  1  0.98  0.66  0.37  1.0
  Si  Si2  1  0.51  0.62  0.9  1.0
  Si  Si3  1  0.62  0.52  0.11  1.0
  O  O4  1  0.82  0.82  0.59  1.0
  O  O5  1  0.52  0.2  0.42  1.0
  O  O6  1  0.27  0.49  0.31  1.0
  O  O7  1  0.95  0.24  0.34  1.0
  O  O8  1  0.78  0.69  0.9  1.0
  O  O9  1  0.08  0.07  0.07  1.0
  O  O10  1  0.33  0.36  0.17  1.0
  O  O11  1  0.65  0.1  0.15  1.0

data_SiO2
_symmetry_space_group_name_H-M   P1
_cell_length_a   5.02
_cell_length_b   5.1
_cell_length_c   8.26
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   118.37
_symmetry_Int_Tables_number   1
_chemical_formula_structural   SiO2
_chemical_formula_sum   'Si4 O8'
_cell_volume   186.19
_cell_formula_units_Z   4
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
  Si  Si0  1  0.02  0.63  0.34  1.0
  Si  Si1  1  0.38  0.89  0.48  1.0
  Si  Si2  1  0.49  0.1  0.38  1.0
  Si  Si3  1  0.91  0.42  0.25  1.0
  O  O4  1  0.05  0.66  0.76  1.0
  O  O5  1  0.18  0.41  0.18  1.0
  O  O6  1  0.22  0.1  0.31  1.0
  O  O7  1  0.35  0.85  0.9  1.0
  O  O8  1  0.48  0.58  0.8  1.0
  O  O9  1  0.67  0.83  0.64  1.0
  O  O10  1  0.73  0.69  0.51  1.0
  O  O11  1  0.92  0.93  0.93  1.0

Si Si Si Si O O O O O O O O