data_[Mg6Ga3Sb3O18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  Ga  1.8100  1.3000  0.7600
  Sb  2.0500  1.4500  0.8300
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [5.1924]
_cell_length_b [5.1924]
_cell_length_c [13.8456]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [Mg2GaSbO6]
_chemical_formula_sum '[Mg6 Ga3 Sb3 O18]'
_cell_volume [323.2863]
_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
[
  Mg  Mg0  3  0.0000  0.0000  0.0219  1.0
  Mg  Mg1  3  0.0000  0.0000  0.5254  1.0
  Ga  Ga2  3  0.0000  0.0000  0.8097  1.0
  Sb  Sb3  3  0.0000  0.0000  0.3165  1.0
  O  O4  9  0.0171  0.7088  0.4144  1.0
  O  O5  9  0.0199  0.3111  0.9149  1.0
]