data_[Mg4Mn4Si8O24]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  Mn  1.5500  1.4000  0.6483
  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 [10.1120]
_cell_length_b [9.3368]
_cell_length_c [5.4743]
_cell_angle_alpha [90.0000]
_cell_angle_beta [111.5925]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [15]
_chemical_formula_structural [MgMn(SiO3)2]
_chemical_formula_sum '[Mg4 Mn4 Si8 O24]'
_cell_volume [480.5813]
_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
[
  Mg  Mg0  4  0.0000  0.2417  0.2500  1.0
  Mn  Mn1  4  0.0000  0.1047  0.7500  1.0
  Si  Si2  8  0.2019  0.4139  0.7096  1.0
  O  O3  8  0.1191  0.2626  0.6284  1.0
  O  O4  8  0.1235  0.0931  0.1675  1.0
  O  O5  8  0.1504  0.4968  0.9270  1.0
]