data_[Al8Ge4O20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Al  1.6100  1.2500  0.6750
  Ge  2.0100  1.2500  0.7700
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Cmcm]
_cell_length_a [3.6172]
_cell_length_b [9.4513]
_cell_length_c [9.5424]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [63]
_chemical_formula_structural [Al2GeO5]
_chemical_formula_sum '[Al8 Ge4 O20]'
_cell_volume [326.2241]
_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
[
  Al  Al0  8  0.0000  0.1373  0.5616  1.0
  Ge  Ge1  4  0.0000  0.1821  0.2500  1.0
  O  O2  8  0.0000  0.0493  0.1139  1.0
  O  O3  8  0.0000  0.3116  0.0774  1.0
  O  O4  4  0.0000  0.2447  0.7500  1.0
]