International
Tables for
Crystallography
Volume B
Reciprocal space
Edited by U. Shmueli

International Tables for Crystallography (2010). Vol. B, ch. 2.5, p. 353   | 1 | 2 |

Figure 2.5.3.25 

M. Tanakaf
[Figure 2.5.3.25]
Figure 2.5.3.25

CBED patterns of Al74Mn20Si6 taken with an electron incidence along the threefold axis. (a) Zone-axis pattern showing symmetry 3m. (b,c) ±DP showing translational symmetry or 2R, indicating that the quasicrystal is centrosymmetric.