data_[Mg6Fe6]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  Fe  1.8300  1.4000  0.8525
]
_symmetry_space_group_name_H-M [Amm2]
_cell_length_a [2.8347]
_cell_length_b [11.8417]
_cell_length_c [6.3110]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [38]
_chemical_formula_structural [MgFe]
_chemical_formula_sum '[Mg6 Fe6]'
_cell_volume [211.8438]
_cell_formula_units_Z [6]
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  4  0.5000  0.2289  0.7145  1
  Mg  Mg1  2  0.5000  0.0000  0.0852  1
  Fe  Fe2  4  0.0000  0.0997  0.4184  1
  Fe  Fe3  2  0.5000  0.0000  0.6509  1
]