Difference between revisions of "Twinning by pseudomerohedry"
From Online Dictionary of Crystallography
BrianMcMahon (talk | contribs) (Tidied translations and added German (U. Mueller)) |
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− | A lattice is said to be pseudosymmetric if at least a lattice row or/and a lattice plane approximately correspond to elements | + | A lattice is said to be pseudosymmetric if at least a lattice row or/and a lattice plane approximately correspond to symmetry elements for the lattice; these elements can act as twin elements (''e.g.'' a monoclinic lattice with its oblique angle ''close'' to 90° is pseudo-orthorhombic and thus shows two pseudo twofold axes and two pseudo mirror planes). |
== See also == | == See also == |
Latest revision as of 14:59, 15 April 2021
Maclage par pseudomériédrie (Fr). Pseudomeroedrische Verzwillingung (Ge). Geminazione per pseudomeroedria (It). 擬欠面双晶 (Ja). Macla por seudomeroedría (Sp).
A lattice is said to be pseudosymmetric if at least a lattice row or/and a lattice plane approximately correspond to symmetry elements for the lattice; these elements can act as twin elements (e.g. a monoclinic lattice with its oblique angle close to 90° is pseudo-orthorhombic and thus shows two pseudo twofold axes and two pseudo mirror planes).
See also
- Chapter 3.3 of International Tables for Crystallography, Volume D