data_[Mg3Cd6Bi6O18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  Cd  1.6900  1.5500  1.0900
  Bi  2.0200  1.6000  1.0350
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R-3]
_cell_length_a [5.7613]
_cell_length_b [5.7613]
_cell_length_c [17.5340]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [148]
_chemical_formula_structural [MgCd2(BiO3)2]
_chemical_formula_sum '[Mg3 Cd6 Bi6 O18]'
_cell_volume [504.0211]
_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  0.0000  1
  Cd  Cd1  6  0.0000  0.0000  0.3721  1
  Bi  Bi2  6  0.0000  0.0000  0.1920  1
  O  O3  18  0.0054  0.3793  0.5953  1
]