data_[Na6Si6B6O24]
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 [P6_3]
_cell_length_a [8.0100]
_cell_length_b [8.0100]
_cell_length_c [7.6440]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [173]
_chemical_formula_structural [NaSiBO4]
_chemical_formula_sum '[Na6 Si6 B6 O24]'
_cell_volume [424.7321]
_cell_formula_units_Z [6]
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  2  0.0000  0.0000  0.2325  1
  Na  Na1  2  0.3333  0.6667  0.2654  1
  Na  Na2  2  0.3333  0.6667  0.6955  1
  Si  Si3  6  0.0229  0.6844  0.0123  1
  B  B4  6  0.0186  0.6805  0.3930  1
  O  O5  6  0.0746  0.5447  0.4690  1
  O  O6  6  0.0986  0.7304  0.2137  1
  O  O7  6  0.1097  0.8609  0.4940  1
  O  O8  6  0.1912  0.4020  0.8874  1
]