data_[Sr4Ca14Mg4]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Sr  0.9500  2.0000  1.3200
  Ca  1.0000  1.8000  1.1400
  Mg  1.3100  1.5000  0.8600
]
_symmetry_space_group_name_H-M [C2/m]
_cell_length_a [8.0923]
_cell_length_b [10.3776]
_cell_length_c [10.7437]
_cell_angle_alpha [90.0000]
_cell_angle_beta [96.7063]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [12]
_chemical_formula_structural [Sr2Ca7Mg2]
_chemical_formula_sum '[Sr4 Ca14 Mg4]'
_cell_volume [896.0650]
_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
[
  Sr  Sr0  4  0.0000  0.2824  0.5000  1
  Ca  Ca1  8  0.1140  0.3148  0.8566  1
  Ca  Ca2  4  0.2390  0.0000  0.7064  1
  Ca  Ca3  2  0.0000  0.0000  0.0000  1
  Mg  Mg4  4  0.1824  0.0000  0.3438  1
]