Difference between revisions of "Twinning by pseudomerohedry"
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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 of symmetry; these elements can act as twinning operators (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). | A lattice is said to be pseudosymmetric if at least a lattice row or/and a lattice plane approximately correspond to elements of symmetry; these elements can act as twinning operators (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). | ||
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+ | Chapter 3.3 of ''International Tables of Crystallography, Volume D''<br> | ||
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+ | [[Category:Fundamental crystallography]] |
Revision as of 05:34, 26 April 2006
Maclage par pseudomériédrie (Fr). Geminazione per pseudomeroedria(It)
Twinning by pseudomerohedry
A lattice is said to be pseudosymmetric if at least a lattice row or/and a lattice plane approximately correspond to elements of symmetry; these elements can act as twinning operators (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).
Chapter 3.3 of International Tables of Crystallography, Volume D