data_[Sr9Ca24]
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
]
_symmetry_space_group_name_H-M [R-3]
_cell_length_a [12.4404]
_cell_length_b [12.4404]
_cell_length_c [12.9013]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [120.0000]
_symmetry_Int_Tables_number [148]
_chemical_formula_structural [Sr3Ca8]
_chemical_formula_sum '[Sr9 Ca24]'
_cell_volume [1729.1483]
_cell_formula_units_Z [3]
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  9  0.0000  0.5000  0.0000  1
  Ca  Ca1  18  0.0431  0.1965  0.8901  1
  Ca  Ca2  6  0.0000  0.0000  0.3567  1
]