data_[Li4Mg4U4O16]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Li  0.9800  1.4500  0.9000
  Mg  1.3100  1.5000  0.8600
  U  1.3800  1.7500  0.9913
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Imma]
_cell_length_a [6.2843]
_cell_length_b [7.0236]
_cell_length_c [8.1946]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [74]
_chemical_formula_structural [LiMgUO4]
_chemical_formula_sum '[Li4 Mg4 U4 O16]'
_cell_volume [361.6985]
_cell_formula_units_Z [4]
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  4  0.2500  0.2500  0.2500  1
  Mg  Mg1  4  0.0000  0.2500  0.8783  1
  U  U2  4  0.0000  0.0000  0.5000  1
  O  O3  8  0.0000  0.0023  0.7465  1
  O  O4  8  0.2253  0.2500  0.4954  1
]