data_[Na3Sr9Mg24]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Sr  0.9500  2.0000  1.3200
  Mg  1.3100  1.5000  0.8600
]
_symmetry_space_group_name_H-M [R3m]
_cell_length_a [6.3630]
_cell_length_b [6.3630]
_cell_length_c [31.4282]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [160]
_chemical_formula_structural [NaSr3Mg8]
_chemical_formula_sum '[Na3 Sr9 Mg24]'
_cell_volume [1101.9716]
_cell_formula_units_Z [3]
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  3  0.0000  0.0000  0.1259  1
  Sr  Sr1  3  0.0000  0.0000  0.0025  1
  Sr  Sr2  3  0.0000  0.0000  0.4980  1
  Sr  Sr3  3  0.0000  0.0000  0.6241  1
  Mg  Mg4  9  0.1667  0.3334  0.8955  1
  Mg  Mg5  9  0.1668  0.3335  0.3961  1
  Mg  Mg6  3  0.0000  0.0000  0.3128  1
  Mg  Mg7  3  0.0000  0.0000  0.8121  1
]