data_[La6Mg3Ge3O18]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  La  1.1000  1.9500  1.1720
  Mg  1.3100  1.5000  0.8600
  Ge  2.0100  1.2500  0.7700
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R-3]
_cell_length_a [5.5807]
_cell_length_b [5.5807]
_cell_length_c [13.4387]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [148]
_chemical_formula_structural [La2MgGeO6]
_chemical_formula_sum '[La6 Mg3 Ge3 O18]'
_cell_volume [362.4616]
_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
[
  La  La0  6  0.0000  0.0000  0.2506  1.0
  Mg  Mg1  3  0.0000  0.0000  0.0000  1.0
  Ge  Ge2  3  -0.0000  0.0000  0.5000  1.0
  O  O3  18  0.0151  0.4418  0.2484  1.0
]