data_[Na4Mn2Ge2O12]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Na  0.9300  1.8000  1.1600
  Mn  1.5500  1.4000  0.6483
  Ge  2.0100  1.2500  0.7700
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P-31c]
_cell_length_a [5.0328]
_cell_length_b [5.0328]
_cell_length_c [10.4405]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [163]
_chemical_formula_structural [Na2MnGeO6]
_chemical_formula_sum '[Na4 Mn2 Ge2 O12]'
_cell_volume [229.0162]
_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
[
  Na  Na0  4  0.3333  0.6667  0.0371  1
  Mn  Mn1  2  0.0000  0.0000  0.2500  1
  Ge  Ge2  2  0.3333  0.6667  0.7500  1
  O  O3  12  0.0512  0.3337  0.8531  1
]