data_ZnCuSn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   3.21
_cell_length_b   3.21
_cell_length_c   6.23
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   ZnCuSn
_chemical_formula_sum   'Zn1 Cu1 Sn1'
_cell_volume   55.58
_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
  Zn  Zn2  1  0.0  0.85  0.37  1.0
  Cu  Cu0  1  0.0  0.0  0.12  1.0
  Sn  Sn1  1  0.61  0.93  0.96  1.0

data_ZnCuSn
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.21
_cell_length_b   3.21
_cell_length_c   6.23
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   120.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   ZnCuSn
_chemical_formula_sum   'Zn1 Cu1 Sn1'
_cell_volume   55.58
_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
  Zn  Zn0  1  0.0  0.85  0.37  1.0
  Cu  Cu1  1  0.0  0.0  0.12  1.0
  Sn  Sn2  1  0.61  0.93  0.96  1.0

Zn Cu Sn
Zn Cu Sn 0 1 o + o 1 2 - - - 