data_[Li4Fe2Si1O7]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Li  0.9800  1.4500  0.9000
  Fe  1.8300  1.4000  0.8525
  Si  1.9000  1.1000  0.5400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P-1]
_cell_length_a [4.9835]
_cell_length_b [5.0385]
_cell_length_c [5.1199]
_cell_angle_alpha [95.3682]
_cell_angle_beta [100.4904]
_cell_angle_gamma [101.8175]
_symmetry_Int_Tables_number [2]
_chemical_formula_structural [Li4Fe2SiO7]
_chemical_formula_sum '[Li4 Fe2 Si1 O7]'
_cell_volume [122.5814]
_cell_formula_units_Z [1]
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
[
  Li  Li0  2  0.0750  0.6513  0.7943  1.0
  Li  Li1  2  0.3584  0.2455  0.9500  1.0
  Fe  Fe2  2  0.1993  0.9180  0.3411  1.0
  Si  Si3  1  0.5000  0.5000  0.5000  1.0
  O  O4  2  0.1687  0.2762  0.5609  1.0
  O  O5  2  0.3059  0.5815  0.1941  1.0
  O  O6  2  0.4370  0.8018  0.6767  1.0
  O  O7  1  0.0000  0.0000  0.0000  1.0
]