Mg Si 
 1.0000000000000000
     5.6135293241739461   -0.0000000000000000    0.0000000000000000
    -0.0000000000000000    5.6135293241739461   -0.0000000000000000
    -0.0000000000000000   -0.0000000000000000    5.6135293241739461
 Mg  Si 
   8   4
Selective dynamics
Cartesian
  1.4033823310434861  1.4033823310434861  1.4033823310434861   T   T   T
  4.2101469931304587  4.2101469931304578  1.4033823310434861   T   T   T
  4.2101469931304587  1.4033823310434861  4.2101469931304578   T   T   T
  1.4033823310434861  4.2101469931304578  4.2101469931304578   T   T   T
  1.4033823310434861  1.4033823310434859  4.2101469931304578   T   T   T
  4.2101469931304587  4.2101469931304569  4.2101469931304578   T   T   T
  1.4033823310434861  4.2101469931304569  1.4033823310434861   T   T   T
  4.2101469931304587  1.4033823310434859  1.4033823310434861   T   T   T
 -0.0000000000000002 -0.0000000000000004 -0.0000000000000004   T   T   T
 -0.0000000000000002  2.8067646620869722  2.8067646620869722   T   T   T
  2.8067646620869722 -0.0000000000000004  2.8067646620869722   T   T   T
  2.8067646620869722  2.8067646620869722 -0.0000000000000004   T   T   T