data_[Mg3Al6Co6O18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  Al  1.6100  1.2500  0.6750
  Co  1.8800  1.3500  0.7683
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [5.1000]
_cell_length_b [5.1000]
_cell_length_c [14.3347]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [MgAl2(CoO3)2]
_chemical_formula_sum '[Mg3 Al6 Co6 O18]'
_cell_volume [322.8918]
_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  0.2088  1
  Al  Al1  3  0.0000  0.0000  0.0168  1
  Al  Al2  3  0.0000  0.0000  0.8375  1
  Co  Co3  3  0.0000  0.0000  0.4761  1
  Co  Co4  3  0.0000  0.0000  0.6604  1
  O  O5  9  0.0465  0.3395  0.7625  1
  O  O6  9  0.0518  0.6811  0.5904  1
]