# generated using pymatgen
data_Mg3Si2O9
_symmetry_space_group_name_H-M   'P 1'
_cell_length_a   5.40706196
_cell_length_b   5.40706196
_cell_length_c   14.21014300
_cell_angle_alpha   90.00000000
_cell_angle_beta   90.00000000
_cell_angle_gamma   119.99999945
_symmetry_Int_Tables_number   1
_chemical_formula_structural   Mg3Si2O9
_chemical_formula_sum   'Mg6 Si4 O18'
_cell_volume   359.79222498
_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
  Mg  Mg0  1  0.66685100  0.97629000  0.92467800  1.0
  Mg  Mg1  1  0.30943900  0.33314900  0.92467800  1.0
  Mg  Mg2  1  0.33314900  0.02371000  0.42467800  1.0
  Mg  Mg3  1  0.02371000  0.69056100  0.92467800  1.0
  Mg  Mg4  1  0.69056100  0.66685100  0.42467800  1.0
  Mg  Mg5  1  0.97629000  0.30943900  0.42467800  1.0
  Si  Si6  1  0.00000000  0.00000000  0.62447100  1.0
  Si  Si7  1  0.00000000  0.00000000  0.12447100  1.0
  Si  Si8  1  0.66666700  0.33333300  0.62509900  1.0
  Si  Si9  1  0.33333300  0.66666700  0.12509900  1.0
  O  O10  1  0.81249000  0.14485800  0.66163900  1.0
  O  O11  1  0.33236700  0.18751000  0.66163900  1.0
  O  O12  1  0.18751000  0.85514200  0.16163900  1.0
  O  O13  1  0.85514200  0.66763300  0.66163900  1.0
  O  O14  1  0.66763300  0.81249000  0.16163900  1.0
  O  O15  1  0.14485800  0.33236700  0.16163900  1.0
  O  O16  1  0.00000000  0.00000000  0.00829100  1.0
  O  O17  1  0.00000000  0.00000000  0.50829100  1.0
  O  O18  1  0.66666700  0.33333300  0.97800700  1.0
  O  O19  1  0.33333300  0.66666700  0.47800700  1.0
  O  O20  1  0.66595500  0.63866700  0.86041900  1.0
  O  O21  1  0.97271200  0.33404500  0.86041900  1.0
  O  O22  1  0.33404500  0.36133300  0.36041900  1.0
  O  O23  1  0.36133300  0.02728800  0.86041900  1.0
  O  O24  1  0.02728800  0.66595500  0.36041900  1.0
  O  O25  1  0.63866700  0.97271200  0.36041900  1.0
  O  O26  1  0.66666700  0.33333300  0.50892400  1.0
  O  O27  1  0.33333300  0.66666700  0.00892400  1.0