Andreini tessellation

The Andreini tessellations are tilings of three-dimensional space using Platonic and Archimedean solids such that all vertices are identical. There are precisely five such tilings:

• The tiling of cubes
• The tiling of octahedra and cuboctahedra
• The tiling of [truncated octahedra]?
• The tiling of octahedra and tetrahedra
• The tiling of tetrahedra and [truncated tetrahedra]?

These and their deformations comprise, together with prisms of 2-D tessellations, all the vertex-uniform tessellations. The tiling of octahedra and tetrahedra is of special importance since its vertices form a cubic close-packing of spheres. All of these are found in crystal arrangements.

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