data_MgBePb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.3
_cell_length_b   4.3
_cell_length_c   3.94
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   MgBePb
_chemical_formula_sum   'Mg1 Be1 Pb1'
_cell_volume   62.98
_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
  Mg  Mg1  1  0.0  0.48  0.21  1.0
  Be  Be0  1  0.0  0.0  0.48  1.0
  Pb  Pb2  1  0.15  0.24  0.19  1.0

data_MgBePb
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.94
_cell_length_b   4.3
_cell_length_c   4.3
_cell_angle_alpha   120.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   MgBePb
_chemical_formula_sum   'Mg1 Be1 Pb1'
_cell_volume   62.98
_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
  Mg  Mg0  1  0.21  0.0  0.48  1.0
  Be  Be1  1  0.48  0.0  0.0  1.0
  Pb  Pb2  1  0.19  0.15  0.24  1.0

Mg Be Pb
Mg Be Pb 0 2 o o o 1 2 o o o 