Earth and Environment Atlas

How The Planet Works
Sign In
Text size
100%
Theme
Concept

Hexagonal Crystal System

Mineralogy

The hexagonal crystal system is one of the two crystal systems, with the trigonal system, that make up the hexagonal crystal family, which is one of the six crystal families in crystallography. The cited article, titled Hexagonal crystal family because the system has no separate article, explains that the family includes two crystal systems and two lattice systems, hexagonal and rhombohedral, and that it consists of the twelve point groups such that at least one of their space groups has the hexagonal lattice as underlying lattice. It is the union of the hexagonal crystal system and the trigonal crystal system and has fifty-two space groups associated with it. Materials whose crystals belong to this system are grouped under this concept.

Connections

Crystal System Of Material

Apatite, Materials

Entity-backed identity for the crystal-system enum value this material already carries, resolved to an earth concept by an explicit value-to-entity map (phase 3 bucket conversion, docs\design_entity_backed_browse_buckets_20260928.md). The crystal-system fact itself stays on the material unchanged.

Beryl, Materials

Entity-backed identity for the crystal system this mineral already carries as an enum fact, phase 3 bucket conversion (docs\design_entity_backed_browse_buckets_20260928.md, w-bucketconv-divmore2-0929). The original fact stays on the entry unchanged.

In Discipline

Geology, Disciplines
Source Hexagonal Crystal System
Sources
Hexagonal Crystal System
  • Wikipedia, lead section
    In crystallography, the hexagonal crystal family is one of the six crystal families, which includes two crystal systems (hexagonal and trigonal) and two lattice systems (hexagonal and rhombohedral).
  • In Discipline: Geology, Lead section (in-discipline Geology)
    In crystallography, the hexagonal crystal family is one of the six crystal families, which includes two crystal systems (hexagonal and trigonal) and two lattice systems (hexagonal and rhombohedral).
View the Source
Comments (0)
No comments yet. Be the first to share a thought.
Reader Challenges (0)
No disputes yet. Spotted an error or a better source? Open the first one.