data_[Si32O64]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Si  1.9000  1.1000  0.5400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Pbcm]
_cell_length_a [7.0184]
_cell_length_b [15.1479]
_cell_length_c [17.4002]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [57]
_chemical_formula_structural [SiO2]
_chemical_formula_sum '[Si32 O64]'
_cell_volume [1849.8683]
_cell_formula_units_Z [32]
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  8  0.1082  0.5969  0.5692  1
  Si  Si1  8  0.1150  0.7266  0.1587  1
  Si  Si2  8  0.1573  0.1001  0.0739  1
  Si  Si3  8  0.4300  0.6602  0.0411  1
  O  O4  8  0.0710  0.1171  0.5121  1
  O  O5  8  0.0796  0.1756  0.1327  1
  O  O6  8  0.0935  0.0024  0.1047  1
  O  O7  8  0.1006  0.6684  0.6388  1
  O  O8  8  0.2969  0.6833  0.1148  1
  O  O9  8  0.3075  0.6033  0.5211  1
  O  O10  8  0.3881  0.1040  0.0705  1
  O  O11  4  0.1456  0.7151  0.2500  1
  O  O12  4  0.4931  0.2500  0.0000  1
]