data_[La8Mg4O16]
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
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Cmce]
_cell_length_a [5.5714]
_cell_length_b [12.4765]
_cell_length_c [5.6702]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [64]
_chemical_formula_structural [La2MgO4]
_chemical_formula_sum '[La8 Mg4 O16]'
_cell_volume [394.1481]
_cell_formula_units_Z [4]
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  8  0.0000  0.1377  0.4870  1.0
  Mg  Mg1  4  0.0000  0.0000  0.0000  1.0
  O  O2  8  0.0000  0.1790  0.0633  1.0
  O  O3  8  0.2500  0.0150  0.7500  1.0
]