Difference between revisions of "Holohedry"
From Online Dictionary of Crystallography
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== Definition == | == Definition == | ||
| − | The [[point group]] of a crystal is called | + | 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 == | == See also == | ||
Revision as of 12:49, 12 December 2016
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