data_[Tl4Cr4Si8O24]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Tl  1.6200  1.9000  1.3325
  Cr  1.6600  1.4000  0.9400
  Si  1.9000  1.1000  0.5400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [C2/c]
_cell_length_a [9.8425]
_cell_length_b [9.1612]
_cell_length_c [5.3727]
_cell_angle_alpha [90.0000]
_cell_angle_beta [104.3737]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [TlCr(SiO3)2]
_chemical_formula_sum '[Tl4 Cr4 Si8 O24]'
_cell_volume [469.2896]
_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
[
  Tl  Tl0  4  0.0000  0.3013  0.7500  1
  Cr  Cr1  4  0.0000  0.0980  0.2500  1
  Si  Si2  8  0.2156  0.4113  0.3068  1
  O  O3  8  0.1127  0.0612  0.6187  1
  O  O4  8  0.1506  0.2496  0.2486  1
  O  O5  8  0.1601  0.4917  0.5387  1
]