W unit cell
1.0
3.16  0.00000000  0.00000000
0.00000000  3.16  0.00000000
0.00000000  0.00000000  3.16
W
2
Direct
  0.00000000  0.00000000  0.00000000
  0.50000000  0.50000000  0.50000000