Difference between revisions of "Twinning by reticular merohedry"
From Online Dictionary of Crystallography
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| − | <Font color="blue"> Maclage par mériédrie réticulaire </Font> (''Fr''). <Font color="black"> Geminazione per meroedria reticolare</Font>(''It'') | + | <Font color="blue"> Maclage par mériédrie réticulaire </Font> (''Fr''). <Font color="black"> Geminazione per meroedria reticolare</Font>(''It''). |
= [[Twinning]] by reticular merohedry = | = [[Twinning]] by reticular merohedry = | ||
| − | 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 reticular 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. | ||
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==See also== | ==See also== | ||
| − | Chapter 3.3 of ''International Tables | + | *[[Twin lattice]] |
| + | *Chapter 3.3 of ''International Tables for Crystallography, Volume D'' | ||
[[Category:Twinning]] | [[Category:Twinning]] | ||
Revision as of 17:54, 17 May 2017
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.
See also
- Twin lattice
- Chapter 3.3 of International Tables for Crystallography, Volume D