data_[Er4Tm4Mg2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Er  1.2400  1.7500  1.0300
  Tm  1.2500  1.7500  1.0950
  Mg  1.3100  1.5000  0.8600
]
_symmetry_space_group_name_H-M [P4/mbm]
_cell_length_a [9.0526]
_cell_length_b [9.0526]
_cell_length_c [3.6228]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [127]
_chemical_formula_structural [Er2Tm2Mg]
_chemical_formula_sum '[Er4 Tm4 Mg2]'
_cell_volume [296.8877]
_cell_formula_units_Z [2]
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
[
  Er  Er0  4  0.1719  0.6719  0.5000  1
  Tm  Tm1  4  0.1277  0.3723  0.0000  1
  Mg  Mg2  2  0.0000  0.0000  0.0000  1
]