data_[Mg6Ga3Ir3O18]
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
  Ir  2.2000  1.3500  0.7650
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [5.1587]
_cell_length_b [5.1587]
_cell_length_c [13.7555]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [Mg2GaIrO6]
_chemical_formula_sum '[Mg6 Ga3 Ir3 O18]'
_cell_volume [317.0192]
_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  0.0207  1.0
  Mg  Mg1  3  0.0000  0.0000  0.5257  1.0
  Ga  Ga2  3  0.0000  0.0000  0.8105  1.0
  Ir  Ir3  3  0.0000  0.0000  0.3207  1.0
  O  O4  9  0.0143  0.3736  0.5805  1.0
  O  O5  9  0.0165  0.7051  0.4138  1.0
]