Triclinic crystal system

A crystal system is described by three basis vectors.

In addition, the angles between these vectors must all be different and may not include 90°.

It is the only lattice type that itself has no mirror planes.

The triclinic crystal system class names, examples, Schönflies notation, Hermann-Mauguin notation, point groups, International Tables for Crystallography space group number,[1] orbifold, type, and space groups are listed in the table below.

Mineral examples include plagioclase, microcline, rhodonite, turquoise, wollastonite and amblygonite, all in triclinic normal (1).

Microcline , an example of the triclinic crystal system
Triclinic (a ≠ b ≠ c ≠ a and α, β, γ, 90° pairwise different)