Silicon FCC
1.0
   3.348920236	   0.000000000	   1.933500000
   1.116306745	   3.157392278	   1.933500000
   0.000000000	   0.000000000	   3.867000000
Si
2
direct
   0.000000000    0.000000000    0.000000000 Si
   0.250000000    0.250000000    0.250000000 Si