data_[Mg6Fe3Te3O18]
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
  Te  2.1000  1.4000  1.2933
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [R3]
_cell_length_a [5.2529]
_cell_length_b [5.2529]
_cell_length_c [14.1686]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [146]
_chemical_formula_structural [Mg2FeTeO6]
_chemical_formula_sum '[Mg6 Fe3 Te3 O18]'
_cell_volume [338.5823]
_cell_formula_units_Z [3]
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  3  0.0000  0.0000  0.4751  1.0
  Mg  Mg1  3  0.0000  0.0000  0.9825  1.0
  Fe  Fe2  3  0.0000  0.0000  0.1928  1.0
  Te  Te3  3  0.0000  0.0000  0.6799  1.0
  O  O4  9  0.0008  0.3625  0.4154  1.0
  O  O5  9  0.0022  0.7075  0.5895  1.0
]