Twinning by pseudomerohedry
From Online Dictionary of Crystallography
Revision as of 14:58, 21 April 2006 by GiovanniFerraris (talk | contribs)
Revision as of 14:58, 21 April 2006 by GiovanniFerraris (talk | contribs)
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).