Hexagonal (crystal system)

Hexagonal

In crystallography, the hexagonal crystal system is one of the 7 lattice point groups. It has the same symmetry as a right prism with a hexagonal base. There is only one hexagonal Bravais lattice.

Graphite is an example of a crystal that crystallizes in the hexagonal crystal system.

The point groups (crystal classes) that fall under this crystal system are listed below, followed by their representations in international notation and Schoenflies notation, and mineral examples, if they exist.

name international Schoenflies example
dihexagonal bipyramidal <math>\frac6m \frac2m \frac2m<math> D6h beryl
dihexagonal pyramidal <math>6mm<math> C6v greenockite
hexagonal bipyramidal <math>\frac6m<math> C6h apatite
hexagonal pyramidal 6 C6
hexagonal trapezohedral <math>622<math> D6
ditrigonal bipyramidal <math>\overline{6}2m<math> D3h
trigonal bipyramidal <math>\overline{6}<math> C3h
de:Hexagonales Kristallsystem

ru:Гексагональная кристаллографическая система

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