data_[Ca8]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Ca  1.0000  1.8000  1.1400
]
_symmetry_space_group_name_H-M [P4_12_12]
_cell_length_a [4.5614]
_cell_length_b [4.5614]
_cell_length_c [16.0314]
_cell_angle_alpha [90.0000]
_cell_angle_beta [90.0000]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [92]
_chemical_formula_structural [Ca]
_chemical_formula_sum '[Ca8]'
_cell_volume [333.5510]
_cell_formula_units_Z [8]
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  8  0.0071  0.4834  0.6876  1.0
]