Difference between revisions of "Twinning by pseudomerohedry"

From Online Dictionary of Crystallography

Line 1: Line 1:
<Font color="blue"> Maclage par pseudomériédrie </Font> (''Fr'').  <Font color="black"> Geminazione per pseudomeroedria</Font>(''It'')
<Font color="blue"> Maclage par pseudomériédrie </Font> (''Fr''). <Font color="green"> Macla por pseudomeriedria </Font> (''Sp'').  <Font color="black"> Geminazione per pseudomeroedria</Font>(''It'')

Revision as of 06:49, 7 May 2006

Maclage par pseudomériédrie (Fr). Macla por pseudomeriedria (Sp). 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