data_AgHg2Pb
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.51
_cell_length_b   4.88
_cell_length_c   5.97
_cell_angle_alpha   90.0
_cell_angle_beta   101.16
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   AgHg2Pb
_chemical_formula_sum   'Ag1 Hg2 Pb1'
_cell_volume   100.18
_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
  Ag  Ag0  1  0.24  0.0  0.27  1.0
  Hg  Hg1  1  0.59  0.44  0.09  1.0
  Hg  Hg2  1  0.62  0.0  0.26  1.0
  Pb  Pb3  1  0.08  0.44  0.18  1.0

data_AgHg2Pb
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.51
_cell_length_b   4.88
_cell_length_c   5.97
_cell_angle_alpha   90.0
_cell_angle_beta   101.16
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   AgHg2Pb
_chemical_formula_sum   'Ag1 Hg2 Pb1'
_cell_volume   100.18
_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
  Ag  Ag0  1  0.24  0.0  0.27  1.0
  Hg  Hg1  1  0.59  0.44  0.09  1.0
  Hg  Hg2  1  0.62  0.0  0.26  1.0
  Pb  Pb3  1  0.08  0.44  0.18  1.0

Ag Hg Hg Pb
Ag Hg Hg Pb 0 2 o o o 1 3 o o o 1 3 + o o 