Meet the "Pyritohedron", named after the shapes seen in the crystals of the mineral pyrite.
https://en.wikipedia.org/wiki/Dodecahedron#Pyritohedron
These shapes are involved in the Weaire-Phelan bubble structure:
https://en.wikipedia.org/wiki/Weaire%E2%80%93Phelan_structure
I am working on these as I am implementing various foams and lattice structures in #Comodo #JuliaLang
