::Cubic crystal system
In crystallography, the cubic (or isometric) crystal system is a crystal system where the unit cell is in the shape of a cube. This is one of the most common and simplest shapes found in crystals and minerals.
There are three main varieties of these crystals:
- Primitive cubic (abbreviated cP<ref name=ITC213>International Tables for Crystallography (2006). Vol. A, Section 2.1.3, pp. 14–16. Link</ref> and alternatively called simple cubic)
- Body-centered cubic (abbreviated cI<ref name=ITC213/> or bcc),
- Face-centered cubic (abbreviated cF<ref name=ITC213/> or fcc, and alternatively called cubic close-packed or ccp)
Each is subdivided into other variants listed below. Note that although the unit cell in these crystals is conventionally taken to be a cube, the primitive unit cell often is not. This is related to the fact that in most cubic crystal systems, there is more than one atom per cubic unit cell.
A classic isometric crystal has square or pentagonal faces.
Cubic crystal system sections
Intro Cubic space groups Crystal classes Voids in the unit cell Multi-element compounds Weaire\u2013Phelan structure See also References Further reading External links
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