data_MgCo2Hg
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   4.81
_cell_length_b   4.81
_cell_length_c   4.64
_cell_angle_alpha   103.1
_cell_angle_beta   103.1
_cell_angle_gamma   36.45
_symmetry_Int_Tables_number   1
_chemical_formula_structural   MgCo2Hg
_chemical_formula_sum   'Mg1 Co2 Hg1'
_cell_volume   61.89
_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  Mg3  1  0.0  0.0  0.0  1.0
  Co  Co0  1  0.62  0.0  0.95  1.0
  Co  Co1  1  0.41  0.0  0.56  1.0
  Hg  Hg2  1  0.01  0.0  0.25  1.0

data_MgCo2Hg
_symmetry_space_group_name_H-M   P1
_cell_length_a   3.01
_cell_length_b   4.64
_cell_length_c   4.81
_cell_angle_alpha   103.1
_cell_angle_beta   108.22
_cell_angle_gamma   90.0
_symmetry_Int_Tables_number   1
_chemical_formula_structural   MgCo2Hg
_chemical_formula_sum   'Mg1 Co2 Hg1'
_cell_volume   61.89
_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  0.0  0.0  0.0  1.0
  Co  Co1  1  0.0  0.56  0.41  1.0
  Co  Co2  1  0.0  0.95  0.62  1.0
  Hg  Hg3  1  0.0  0.25  0.01  1.0

Mg Co Co Hg