data_Mg2SiAu
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.93
_cell_length_b   4.93
_cell_length_c   3.0
_cell_angle_alpha   90.0
_cell_angle_beta   90.0
_cell_angle_gamma   103.73
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Mg2SiAu
_chemical_formula_sum   'Mg2 Si1 Au1'
_cell_volume   70.72
_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  0.52  0.06  0.5  1.0
  Mg  Mg2  1  0.52  0.94  0.5  1.0
  Si  Si3  1  0.0  0.0  0.0  1.0
  Au  Au0  1  0.04  0.0  0.0  1.0

data_Mg2SiAu
_symmetry_space_group_name_H-M   Pm
_cell_length_a   4.93
_cell_length_b   3.0
_cell_length_c   4.93
_cell_angle_alpha   90.0
_cell_angle_beta   103.73
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   6
_chemical_formula_structural   Mg2SiAu
_chemical_formula_sum   'Mg2 Si1 Au1'
_cell_volume   70.72
_cell_formula_units_Z   1
loop_
 _symmetry_equiv_pos_site_id
 _symmetry_equiv_pos_as_xyz
  1  'x, y, z'
  2  '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  0.52  0.5  0.06  1.0
  Mg  Mg1  1  0.52  0.5  0.94  1.0
  Si  Si2  1  0.0  0.0  0.0  1.0
  Au  Au3  1  0.04  0.0  0.0  1.0

Mg Mg Si Au