Twin element
From Online Dictionary of Crystallography
Élément de maclage (Fr). Elemento di geminazione (It). 双晶要素 (Ja)
The direct lattice element about which a twin operation is performed. Twins are classified accordingly in:
- reflection twins, if the twin element is a lattice plane (the twin plane)
- rotation twins, if the twin element is a lattice direction (the twin axis);
- inversion twins, if the twin element is an inversion centre (the twin centre).
Related articles
See also
Chapter 3.3 of International Tables of Crystallography, Volume D