Holohedry
From Online Dictionary of Crystallography
Revision as of 12:49, 12 December 2016 by MassimoNespolo (talk | contribs) (Modified to be more consistent withthe 6th edition of ITA)
Revision as of 12:49, 12 December 2016 by MassimoNespolo (talk | contribs) (Modified to be more consistent withthe 6th edition of ITA)
Holoédrie (Fr). Holedria (Sp). Oloedria (It). 完面像 (Ja)
Definition
The point group of a crystal is called holohedral if it is identical to the point group of its lattice. The corresponding geometric crystal class is called a holohedry. In the three-dimensional space, there are seven holohedries: [math] {\bar 1}, 2/m, mmm, {\bar 3}m, 4/m mm, 6/m mm, m{\bar 3}m[/math].
See also
Section 9.1 of International Tables of Crystallography, Volume A