quat.symm.hex        file with 12 proper rotations in quaternion form for hcp 622
12
   0    0    0    1
   0   0    0.5   0.8660254
   0   0   0.8660254   0.5
   0    0    1    0
   0   0   0.8660254  -0.5
   0   0    0.5  -0.8660254
   1    0    0    0
   0.8660254   0.5    0    0
   0.5   0.8660254    0    0
   0    1    0    0
  -0.5   0.8660254    0    0
  -0.8660254   0.5    0    0