Triclinic crystal system

The triclinic crystal system is one of the seven crystal systems in crystallography. It includes all of the dot groups, which have no axis of rotation. The word means triclinic triple inclined. This term refers to the fact that in the triclinic lattice system, all three axes may be inclined to each other. The triclinic crystal system is also referred to as anorthisches crystal system and its lattice system is therefore abbreviated as A (t, however, is tetragonal).

Point groups

The triclinic crystal system comprises the point groups. They belong to the triclinic crystal family and can be described with the triclinic lattice system.

Grid system

The triclinic lattice system has the holohedry. Due to the symmetry elements there are no conditions for the lattice axes, therefore:

The grating vectors are chosen such, that: c

Bravais lattice

In the triclinic there are really only the primitive Bravais lattice. Nevertheless, in the literature various centered lattice occur.

Chart triclinic point groups and their physical properties

In the triclinic crystal system is available in each of the two groups of points exactly one space group: in the point group or in.

For information on the physical properties means - prohibited and allowed by symmetry. About the magnitude of the effect can be made due to the symmetry assertion. One can assume that this effect is never exactly disappear.

More triclinic crystallizing chemical substances, see Category: triclinic crystal system

Crystal forms of the triclinic crystal system

Crystal forms of the triclinic crystal system using the example of Chalkanthit, kyanite, Axinit, rhodonite and albite.

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