data_[Mg4Ag4As4O20]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Mg  1.3100  1.5000  0.8600
  Ag  1.9300  1.6000  1.0867
  As  2.1800  1.1500  0.6600
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_12_12_1]
_cell_length_a [6.1673]
_cell_length_b [7.9251]
_cell_length_c [9.2696]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [19]
_chemical_formula_structural [MgAgAsO5]
_chemical_formula_sum '[Mg4 Ag4 As4 O20]'
_cell_volume [453.0635]
_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  0.1073  0.8216  0.6833  1
  Ag  Ag1  4  0.2416  0.7516  0.0090  1
  As  As2  4  0.0600  0.8915  0.3514  1
  O  O3  4  0.0063  0.3568  0.6093  1
  O  O4  4  0.0064  0.0659  0.4705  1
  O  O5  4  0.1369  0.7469  0.4765  1
  O  O6  4  0.1646  0.3426  0.2466  1
  O  O7  4  0.2314  0.0571  0.7363  1
]