# Difference between revisions of "Holohedry"

### From Online Dictionary of Crystallography

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== Definition == | == Definition == | ||

− | The point group of a crystal is called holohedry if it is identical to the point group of its lattice. | + | The point group of a crystal is called holohedry if it is identical to the point group of its lattice. 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 == | == See also == |

## Revision as of 06:48, 21 April 2006

Holédrie (*Fr*). Holedria (*Sp*).

## Definition

The point group of a crystal is called holohedry if it is identical to the point group of its lattice. 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*