data_Ce3Mg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.67
_cell_length_b   5.0
_cell_length_c   7.2
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Ce3Mg
_chemical_formula_sum   'Ce3 Mg1'
_cell_volume   132.21
_cell_formula_units_Z   1
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
  Ce  Ce0  1  0.84  0.5  0.49  1.0
  Ce  Ce1  1  0.0  0.0  0.6  1.0
  Ce  Ce2  1  0.84  0.5  0.72  1.0
  Mg  Mg3  1  0.0  0.0  0.0  1.0

data_Ce3Mg
_symmetry_space_group_name_H-M   Pm
_cell_length_a   3.67
_cell_length_b   5.0
_cell_length_c   7.2
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   6
_chemical_formula_structural   Ce3Mg
_chemical_formula_sum   'Ce3 Mg1'
_cell_volume   132.21
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '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
  Ce  Ce0  1  0.0  0.0  0.6  1.0
  Ce  Ce1  1  0.84  0.5  0.49  1.0
  Ce  Ce2  1  0.84  0.5  0.72  1.0
  Mg  Mg3  1  0.0  0.0  0.0  1.0

Ce Ce Ce Mg