data_[Be12Cr8Si12O48]
loop_
 _atom_type_symbol
 _atom_type_electronegativity
 _atom_type_radius
 _atom_type_ionic_radius
[
  Be  1.5700  1.0500  0.5900
  Cr  1.6600  1.4000  0.9400
  Si  1.9000  1.1000  0.5400
  O  3.4400  0.6000  1.2600
]
_symmetry_space_group_name_H-M [P2_1/c]
_cell_length_a [7.9977]
_cell_length_b [7.4902]
_cell_length_c [15.9019]
_cell_angle_alpha [90.0000]
_cell_angle_beta [120.0698]
_cell_angle_gamma [90.0000]
_symmetry_Int_Tables_number [14]
_chemical_formula_structural [Be3Cr2(SiO4)3]
_chemical_formula_sum '[Be12 Cr8 Si12 O48]'
_cell_volume [824.3833]
_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
[
  Be  Be0  4  0.1730  0.6495  0.5982  1
  Be  Be1  4  0.1910  0.1423  0.7651  1
  Be  Be2  4  0.4713  0.1421  0.5858  1
  Cr  Cr3  4  0.1664  0.0510  0.4114  1
  Cr  Cr4  4  0.1688  0.0605  0.9238  1
  Si  Si5  4  0.1603  0.2394  0.0991  1
  Si  Si6  4  0.1979  0.7369  0.2666  1
  Si  Si7  4  0.4684  0.7383  0.0814  1
  O  O8  4  0.0480  0.2431  0.8058  1
  O  O9  4  0.0551  0.2400  0.4754  1
  O  O10  4  0.0651  0.1182  0.6445  1
  O  O11  4  0.0861  0.0399  0.1119  1
  O  O12  4  0.2206  0.5469  0.3241  1
  O  O13  4  0.2714  0.7370  0.1907  1
  O  O14  4  0.2885  0.6154  0.5367  1
  O  O15  4  0.2900  0.6103  0.8543  1
  O  O16  4  0.3557  0.5451  0.0409  1
  O  O17  4  0.3779  0.2497  0.3063  1
  O  O18  4  0.3840  0.2495  0.1355  1
  O  O19  4  0.3923  0.2487  0.9723  1
]