data_[Na4Si8B4O24]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Si  1.9000  1.1000  0.5400
  B  2.0400  0.8500  0.4100
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [9.7826]
_cell_length_b [9.9730]
_cell_length_c [5.4462]
_cell_angle_alpha [90.0000]
_cell_angle_beta [119.4393]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [NaSi2BO6]
_chemical_formula_sum '[Na4 Si8 B4 O24]'
_cell_volume [462.7291]
_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
[
  Na  Na0  4  0.0000  0.1300  0.2500  1.0
  Si  Si1  8  0.1982  0.4145  0.0944  1.0
  B  B2  4  0.0000  0.2038  0.7500  1.0
  O  O3  8  0.0860  0.2827  0.0112  1.0
  O  O4  8  0.1131  0.1159  0.7182  1.0
  O  O5  8  0.1636  0.4949  0.8080  1.0
]