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Holohedry

From Online Dictionary of Crystallography

Revision as of 13:58, 15 May 2017 by BrianMcMahon (talk | contribs) (Style edits to align with printed edition)

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

  • Chapter 3.2.1.1 of International Tables for Crystallography, Volume A, 6th edition