data_[Ho8Si4O20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ho  1.2300  1.7500  1.0410
  Si  1.9000  1.1000  0.5400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [Pnma]
_cell_length_a [10.1421]
_cell_length_b [3.6574]
_cell_length_c [10.7813]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [62]
_chemical_formula_structural [Ho2SiO5]
_chemical_formula_sum '[Ho8 Si4 O20]'
_cell_volume [399.9199]
_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
[
  Ho  Ho0  4  0.1013  0.2500  0.2159  1
  Ho  Ho1  4  0.1395  0.2500  0.5518  1
  Si  Si2  4  0.1818  0.2500  0.8721  1
  O  O3  4  0.0098  0.7500  0.6054  1
  O  O4  4  0.0231  0.2500  0.8434  1
  O  O5  4  0.2220  0.2500  0.0255  1
  O  O6  4  0.2255  0.7500  0.8746  1
  O  O7  4  0.2352  0.7500  0.2332  1
]