data_[Li4Ca8Mg4Ag8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Li  0.9800  1.4500  0.9000
  Ca  1.0000  1.8000  1.1400
  Mg  1.3100  1.5000  0.8600
  Ag  1.9300  1.6000  1.0867
]
_symmetry_space_group_name_H-M [Ibam]
_cell_length_a [6.1513]
_cell_length_b [15.8829]
_cell_length_c [6.1527]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [72]
_chemical_formula_structural [LiCa2MgAg2]
_chemical_formula_sum '[Li4 Ca8 Mg4 Ag8]'
_cell_volume [601.1254]
_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
[
  Li  Li0  4  0.0000  0.5000  0.2500  1.0
  Ca  Ca1  8  0.2448  0.3245  0.5000  1.0
  Mg  Mg2  4  0.0000  0.0000  0.2500  1.0
  Ag  Ag3  8  0.2470  0.8822  0.0000  1.0
]