[CIF]
data_Mg4Si3
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   6.39776664
_cell_length_b   8.00438693
_cell_length_c   11.74430049
_cell_angle_alpha   90.15379867
_cell_angle_beta   94.62899839
_cell_angle_gamma   111.86311403
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Mg4Si3
_chemical_formula_sum   'Mg16 Si12'
_cell_volume   556.00180461
_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
  Mg  Mg0  1  0.53343250  6.82603193  10.74251702  1
  Mg  Mg1  1  1.92355551  3.53096871  10.29397415  1
  Mg  Mg2  1  -2.25490354  6.00271946  4.43192628  1
  Mg  Mg3  1  -0.09580171  4.14719096  3.05685718  1
  Mg  Mg4  1  -2.55203786  5.86818930  10.35509216  1
  Mg  Mg5  1  -1.43376568  2.22232442  10.32797876  1
  Mg  Mg6  1  1.00827382  6.57420268  4.53234044  1
  Mg  Mg7  1  1.65851467  1.55755798  4.75999062  1
  Mg  Mg8  1  -1.40732920  6.59883446  7.54697235  1
  Mg  Mg9  1  0.57553077  2.35646905  7.62708173  1
  Mg  Mg10  1  2.63566463  5.83277737  1.66520054  1
  Mg  Mg11  1  4.66424656  2.37197090  4.72972525  1
  Mg  Mg12  1  3.82779368  3.55147747  7.65883189  1
  Mg  Mg13  1  1.73906482  5.94177347  7.95200791  1
  Mg  Mg14  1  1.92695391  2.66904269  1.29765451  1
  Mg  Mg15  1  -0.48899798  7.03657119  1.78750699  1
  Si  Si16  1  3.61937131  0.91801669  6.73885457  1
  Si  Si17  1  -0.52627635  4.53774700  5.92283224  1
  Si  Si18  1  0.30631902  0.71757783  0.35753619  1
  Si  Si19  1  -1.70242848  4.19804654  0.75512134  1
  Si  Si20  1  -0.37386952  4.49828254  9.14251171  1
  Si  Si21  1  2.74625404  1.23832103  8.98932712  1
  Si  Si22  1  2.66792026  3.90890709  3.61980872  1
  Si  Si23  1  -0.18154260  0.90274928  2.85551049  1
  Si  Si24  1  1.80953900  4.09120725  5.84202480  1
  Si  Si25  1  -0.48471892  0.27848070  6.21944801  1
  Si  Si26  1  0.54728702  4.88794098  0.03316149  1
  Si  Si27  1  4.60418800  1.77204545  1.25125985  1
[/CIF]
