Crystal system

The diamond crystal structure belongs to the face-centered cubic lattice, with a repeated two-atom pattern.
Hexagonal hanksite crystal, with threefold c-axis symmetry

Set of point groups (a group of geometric symmetries with at least one fixed point).

- Crystal system
The diamond crystal structure belongs to the face-centered cubic lattice, with a repeated two-atom pattern.

14 related topics

Alpha

Auguste Bravais (c. 1850)

Auguste Bravais

Auguste Bravais (c. 1850)

Auguste Bravais (23 August 1811, Annonay, Ardèche – 30 March 1863, Le Chesnay, France) was a French physicist known for his work in crystallography, the conception of Bravais lattices, and the formulation of Bravais law.

An example of the tetragonal crystals, wulfenite

Tetragonal crystal system

An example of the tetragonal crystals, wulfenite

In crystallography, the tetragonal crystal system is one of the 7 crystal systems.

An example of the triclinic crystals, microcline

Triclinic crystal system

An example of the triclinic crystals, microcline
Triclinic (a ≠ b ≠ c and α ≠ β ≠ γ )

In crystallography, the triclinic (or anorthic) crystal system is one of the 7 crystal systems.

Germanic Kingdoms in Europe and Africa c. undefined 476 AD

Moritz Ludwig Frankenheim

German physicist, geographer, and crystallographer.

German physicist, geographer, and crystallographer.

Germanic Kingdoms in Europe and Africa c. undefined 476 AD

By assigning symmetry elements to the crystal systems defined previously by Weiss and Friedrich Mohs (1773-1839), Frankenheim was able, for the first time, to define 32 point groups (crystal classes) and to classify them into four crystal systems (the regular one, the fourfold, the twofold and the sixfold).