data_[Ca4Mg2Zn2]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ca  1.0000  1.8000  1.1400
  Mg  1.3100  1.5000  0.8600
  Zn  1.6500  1.3500  0.8800
]
_symmetry_space_group_name_H-M [Pmmn]
_cell_length_a [3.7620]
_cell_length_b [4.7506]
_cell_length_c [14.3881]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [59]
_chemical_formula_structural [Ca2MgZn]
_chemical_formula_sum '[Ca4 Mg2 Zn2]'
_cell_volume [257.1402]
_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
[
  Ca  Ca0  2  0.0000  0.0000  0.8061  1
  Ca  Ca1  2  0.0000  0.5000  0.5876  1
  Mg  Mg2  2  0.0000  0.5000  0.9839  1
  Zn  Zn3  2  0.0000  0.5000  0.3661  1
]