data_[Mg2Ta4Fe4O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  Ta  1.5000  1.4500  0.8200
  Fe  1.8300  1.4000  0.8525
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Cm]
_cell_length_a [13.1374]
_cell_length_b [3.9322]
_cell_length_c [7.1706]
_cell_angle_alpha [90.0000]
_cell_angle_beta [107.5896]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [8]
_chemical_formula_structural [MgTa2(FeO4)2]
_chemical_formula_sum '[Mg2 Ta4 Fe4 O16]'
_cell_volume [353.1069]
_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
[
  Mg  Mg0  2  0.1853  0.5000  0.5171  1.0
  Ta  Ta1  2  0.0973  0.0000  0.1891  1.0
  Ta  Ta2  2  0.3998  0.5000  0.7905  1.0
  Fe  Fe3  2  0.2045  0.0000  0.8406  1.0
  Fe  Fe4  2  0.3102  0.5000  0.2094  1.0
  O  O5  2  0.0567  0.0000  0.8788  1.0
  O  O6  2  0.1188  0.5000  0.2190  1.0
  O  O7  2  0.1396  0.0000  0.4770  1.0
  O  O8  2  0.2457  0.5000  0.8089  1.0
  O  O9  2  0.2479  0.0000  0.1537  1.0
  O  O10  2  0.3450  0.5000  0.5160  1.0
  O  O11  2  0.3846  0.0000  0.8131  1.0
  O  O12  2  0.4446  0.5000  0.1167  1.0
]