data.Ni-unit

# Nickel unit cell 

4 atoms 
3 atom types

0 3.51912 xlo xhi
0 3.51912 ylo yhi
0 3.51912 zlo zhi
0.0 0.00 0.00 xy xz yz 

Masses

1 55.8452  
2 58.710 
3 51.9962

Atoms

1 2 0.0   0.0   0.0 
2 2 1.75956  1.75956  0.0
3 2 1.75956  0.0   1.75956
4 2 0.0   1.75956  1.75956