HCP perfect
1
1.500000 -2.598076 0.000000
1.500000 2.598076 0.000000
0.000000 0.000000 4.899000
He
2
direct
0.000000 0.000000 0.000000 lattice atom 1
0.333333 0.666667 0.500000 lattice atom 2
