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Holohedry

From Online Dictionary of Crystallography

Revision as of 14:14, 23 February 2007 by MassimoNespolo (talk | contribs) (Definition)

Holédrie (Fr). Holedria (Sp). Oloedria (It)


Definition

The point group of a crystal is called holohedry if it is identical to the point group of its lattice. In the three-dimensional space, there are seven holohedral point groups: [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