data_[Mg6Zr3Bi3O18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  Zr  1.3300  1.5500  0.8600
  Bi  2.0200  1.6000  1.0350
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [5.4515]
_cell_length_b [5.4515]
_cell_length_c [14.5551]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [Mg2ZrBiO6]
_chemical_formula_sum '[Mg6 Zr3 Bi3 O18]'
_cell_volume [374.6132]
_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  0.0214  1.0
  Mg  Mg1  3  0.0000  0.0000  0.5192  1.0
  Zr  Zr2  3  0.0000  0.0000  0.8090  1.0
  Bi  Bi3  3  0.0000  0.0000  0.3065  1.0
  O  O4  9  0.0283  0.6708  0.0858  1.0
  O  O5  9  0.0612  0.3645  0.5827  1.0
]