data_MgNbPb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.67
_cell_length_b   5.67
_cell_length_c   5.67
_cell_angle_alpha   147.39
_cell_angle_beta   139.04
_cell_angle_gamma   53.31
_symmetry_Int_Tables_number   1
_chemical_formula_structural   MgNbPb
_chemical_formula_sum   'Mg1 Nb1 Pb1'
_cell_volume   64.06
_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  0.0  0.0  0.07  1.0
  Nb  Nb1  1  0.0  0.0  0.7  1.0
  Pb  Pb2  1  0.0  0.0  0.36  1.0

data_MgNbPb
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.18
_cell_length_b   3.97
_cell_length_c   5.67
_cell_angle_alpha   110.48
_cell_angle_beta   106.31
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   MgNbPb
_chemical_formula_sum   'Mg1 Nb1 Pb1'
_cell_volume   64.06
_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  0.0  0.07  0.07  1.0
  Nb  Nb1  1  0.0  0.7  0.7  1.0
  Pb  Pb2  1  0.0  0.36  0.36  1.0

Mg Nb Pb