data_[Na4Ca8Ga4O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Ca  1.0000  1.8000  1.1400
  Ga  1.8100  1.3000  0.7600
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [3.3167]
_cell_length_b [11.7970]
_cell_length_c [11.8890]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [NaCa2GaO4]
_chemical_formula_sum '[Na4 Ca8 Ga4 O16]'
_cell_volume [465.1865]
_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  0.0981  0.7500  1
  Ca  Ca1  8  0.0000  0.3714  0.5328  1
  Ga  Ga2  4  0.0000  0.1695  0.2500  1
  O  O3  8  0.0000  0.2534  0.1202  1
  O  O4  4  0.0000  0.0000  0.0000  1
  O  O5  4  0.0000  0.4192  0.7500  1
]