data_MgZnSn
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.71
_cell_length_b   6.63
_cell_length_c   3.23
_cell_angle_alpha   77.34
_cell_angle_beta   74.61
_cell_angle_gamma   28.06
_symmetry_Int_Tables_number   1
_chemical_formula_structural   MgZnSn
_chemical_formula_sum   'Mg1 Zn1 Sn1'
_cell_volume   65.22
_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  0.17  0.4  0.36  1.0
  Zn  Zn2  1  0.17  0.4  0.26  1.0
  Sn  Sn1  1  0.17  0.4  0.45  1.0

data_MgZnSn
_symmetry_space_group_name_H-M   Cm
_cell_length_a   4.34
_cell_length_b   12.53
_cell_length_c   3.23
_cell_angle_alpha   90.0
_cell_angle_beta   132.1
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   8
_chemical_formula_structural   MgZnSn
_chemical_formula_sum   'Mg2 Zn2 Sn2'
_cell_volume   130.44
_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+1/2, y+1/2, z'
  4  'x+1/2, -y+1/2, 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  2  0.07  0.0  0.47  1.0
  Zn  Zn1  2  0.17  0.0  0.57  1.0
  Sn  Sn2  2  0.48  0.5  0.38  1.0

Mg Zn Sn