data_[Tb2Er6Mg2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tb  1.1000  1.7500  0.9815
  Er  1.2400  1.7500  1.0300
  Mg  1.3100  1.5000  0.8600
]
_symmetry_space_group_name_H-M [Pmmn]
_cell_length_a [3.6807]
_cell_length_b [10.3220]
_cell_length_c [8.1177]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [59]
_chemical_formula_structural [TbEr3Mg]
_chemical_formula_sum '[Tb2 Er6 Mg2]'
_cell_volume [308.4083]
_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
[
  Tb  Tb0  2  0.0000  0.5000  0.0584  1
  Er  Er1  4  0.0000  0.2463  0.7337  1
  Er  Er2  2  0.0000  0.5000  0.4419  1
  Mg  Mg3  2  0.0000  0.0000  0.2527  1
]