Mg Si 
 1.0000000000000000
     6.5158681897400159   -0.0000000000000000   -0.0000000000000000
    -0.0000000000000000    6.5158681897400159    0.0000000000000000
     0.0000000000000000    0.0000000000000000    6.5158681897400159
 Mg  Si 
   8   4
Selective dynamics
Cartesian
  1.6289670474350038  1.6289670474350038  1.6289670474350038   T   T   T
  4.8869011423050113  4.8869011423050113  1.6289670474350038   T   T   T
  4.8869011423050113  1.6289670474350038  4.8869011423050113   T   T   T
  1.6289670474350038  4.8869011423050113  4.8869011423050113   T   T   T
  1.6289670474350038  1.6289670474350035  4.8869011423050113   T   T   T
  4.8869011423050113  4.8869011423050104  4.8869011423050113   T   T   T
  1.6289670474350038  4.8869011423050104  1.6289670474350038   T   T   T
  4.8869011423050113  1.6289670474350035  1.6289670474350038   T   T   T
 -0.0000000000000002 -0.0000000000000005 -0.0000000000000005   T   T   T
 -0.0000000000000002  3.2579340948700075  3.2579340948700075   T   T   T
  3.2579340948700075 -0.0000000000000005  3.2579340948700075   T   T   T
  3.2579340948700075  3.2579340948700075 -0.0000000000000005   T   T   T