Difference between revisions of "Twinning by reticular merohedry"
From Online Dictionary of Crystallography
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In the presence of a sublattice whose oriented [[point group]] D('''L'''<sub>T</sub>) differs from that of the crystal (individual) lattice D('''L'''<sub>ind</sub>), a symmetry element belonging to D('''L'''<sub>T</sub>) but not to D('''L'''<sub>ind</sub>) can act as [[twin element]]. | In the presence of a sublattice whose oriented [[point group]] D('''L'''<sub>T</sub>) differs from that of the crystal (individual) lattice D('''L'''<sub>ind</sub>), a symmetry element belonging to D('''L'''<sub>T</sub>) but not to D('''L'''<sub>ind</sub>) can act as [[twin element]]. | ||
| − | If lattice and sublattice have the same point group but (some of) their symmetry elements are differently oriented, ''[[twinning by polyholohedry]]'' can occur. | + | If lattice and sublattice have the same point group but (some of) their symmetry elements are differently oriented, ''[[twinning by reticular polyholohedry]]'' can occur. |
==Related articles== | ==Related articles== | ||
Revision as of 10:25, 7 May 2006
Maclage par mériédrie réticulaire (Fr). Geminazione per meroedria reticolare(It)
Twinning by reticular merohedry
In the presence of a sublattice whose oriented point group D(LT) differs from that of the crystal (individual) lattice D(Lind), a symmetry element belonging to D(LT) but not to D(Lind) can act as twin element.
If lattice and sublattice have the same point group but (some of) their symmetry elements are differently oriented, twinning by reticular polyholohedry can occur.
Related articles
See also
Chapter 3.3 of International Tables of Crystallography, Volume D