data_MgAgPb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.63
_cell_length_b   6.6
_cell_length_c   3.37
_cell_angle_alpha   75.75
_cell_angle_beta   74.76
_cell_angle_gamma   29.49
_symmetry_Int_Tables_number   1
_chemical_formula_structural   MgAgPb
_chemical_formula_sum   'Mg1 Ag1 Pb1'
_cell_volume   69.95
_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  0.34  0.42  0.96  1.0
  Ag  Ag0  1  0.34  0.42  0.2  1.0
  Pb  Pb2  1  0.34  0.42  0.18  1.0

data_MgAgPb
_symmetry_space_group_name_H-M   Imm2
_cell_length_a   3.37
_cell_length_b   12.34
_cell_length_c   3.37
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   44
_chemical_formula_structural   MgAgPb
_chemical_formula_sum   'Mg2 Ag2 Pb2'
_cell_volume   139.99
_cell_formula_units_Z   2
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '-x, -y, z'
  3  '-x, y, z'
  4  'x, -y, z'
  5  'x+1/2, y+1/2, z+1/2'
  6  '-x+1/2, -y+1/2, z+1/2'
  7  '-x+1/2, y+1/2, z+1/2'
  8  'x+1/2, -y+1/2, z+1/2'
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  2  0.0  0.5  0.38  1.0
  Ag  Ag1  2  0.0  0.5  0.63  1.0
  Pb  Pb2  2  0.0  0.5  0.6  1.0

Mg Ag Pb