From Online Dictionary of Crystallography

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Holoédrie (Fr). Holoedrie (Ge). Oloedria(It). 完面像(Ja). Holoedría (Sp).


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 of International Tables for Crystallography, Volume A, 6th edition