[CIF]
data_NaCr(SiO3)2
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.58560830
_cell_length_b   6.58560830
_cell_length_c   5.35555220
_cell_angle_alpha   103.15527079
_cell_angle_beta   103.15527079
_cell_angle_gamma   84.56109944
_symmetry_Int_Tables_number   1
_chemical_formula_structural   NaCr(SiO3)2
_chemical_formula_sum   'Na2 Cr2 Si4 O12'
_cell_volume   220.01402663
_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
  Na  Na0  1  4.46056500  -1.79895996  1.27396725  1
  Na  Na1  1  3.63684500  1.79895996  3.82190175  1
  Cr  Cr2  1  4.46056500  3.60100357  1.27396725  1
  Cr  Cr3  1  3.63684500  -3.60100357  3.82190175  1
  Si  Si4  1  6.45716085  0.80396633  1.34973773  1
  Si  Si5  1  5.63344085  -0.80396633  3.89767223  1
  Si  Si6  1  2.46396915  0.80396633  1.19819677  1
  Si  Si7  1  1.64024915  -0.80396633  3.74613127  1
  O  O8  1  5.50975031  0.05572294  2.47831983  1
  O  O9  1  3.41137969  0.05572294  0.06961467  1
  O  O10  1  2.58765969  -0.05572294  2.61754917  1
  O  O11  1  4.68603031  -0.05572294  5.02625433  1
  O  O12  1  5.90874234  2.27736999  1.00965981  1
  O  O13  1  3.01238766  2.27736999  1.53827469  1
  O  O14  1  2.18866766  -2.27736999  4.08620919  1
  O  O15  1  5.08502234  -2.27736999  3.55759431  1
  O  O16  1  7.21136180  -0.70242715  4.39058035  1
  O  O17  1  0.06232820  -0.70242715  3.25322315  1
  O  O18  1  0.88604820  0.70242715  0.70528865  1
  O  O19  1  8.03508180  0.70242715  1.84264585  1
[/CIF]
