Category:Crystals in space group 221

This is a non-diffusing subcategory of Category:Cubic crystals. It includes crystals that can also be found in the parent category, or in diffusing subcategories of the parent.

This category lists crystals that display the symmetry of the Pm3m space group (No. 221) of the cubic crystal system.

The crystal being referred to may be just one of the possible forms of a named element or compound.