data_[Gd8Si8O28]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Gd  1.2000  1.8000  1.0750
  Si  1.9000  1.1000  0.5400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [6.5154]
_cell_length_b [6.6061]
_cell_length_c [12.4376]
_cell_angle_alpha [90.0000]
_cell_angle_beta [107.3827]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [Gd2Si2O7]
_chemical_formula_sum '[Gd8 Si8 O28]'
_cell_volume [510.8883]
_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
[
  Gd  Gd0  4  0.0278  0.1071  0.8621  1
  Gd  Gd1  4  0.3499  0.1832  0.6562  1
  Si  Si2  4  0.2093  0.5737  0.8893  1
  Si  Si3  4  0.3977  0.6748  0.5854  1
  O  O4  4  0.0031  0.7234  0.8315  1
  O  O5  4  0.1588  0.1102  0.4622  1
  O  O6  4  0.2220  0.0115  0.0478  1
  O  O7  4  0.2900  0.6666  0.1527  1
  O  O8  4  0.2979  0.5025  0.7856  1
  O  O9  4  0.3726  0.0856  0.8409  1
  O  O10  4  0.4113  0.7148  0.9673  1
]