 O Mg
   1.0
     4.2172594099999996    0.0000000000000000    0.0000000000000000
     0.0000000000000000    4.2172594099999996    0.0000000000000000
     0.0000000000000000    0.0000000000000000    4.2172594099999996
 O Mg
   4   4
Direct
   0.5000000000000000  0.0000000000000000  0.0000000000000000
   0.5000000000000000  0.5000000000000000  0.5000000000000000
   0.0000000000000000  0.0000000000000000  0.5000000000000000
   0.0000000000000000  0.5000000000000000  0.0000000000000000
   0.0000000000000000  0.0000000000000000  0.0000000000000000
   0.0000000000000000  0.5000000000000000  0.5000000000000000
   0.5000000000000000  0.0000000000000000  0.5000000000000000
   0.5000000000000000  0.5000000000000000  0.0000000000000000