| Copper, Cu, has been found associated with cuprite octahedra at Pedra Preta, where these minerals occur on talc and magnesite. |
| The structure of boehmite consists of double layers of oxygen octahedra partially filled with Aluminium cations. |
| Peterson and Jordan go on to investigate interesting links between integer octahedra and integer antiprisms. |
| In the Isometric Tribe can be found the families of the Tetrakis Hexahedrons and Octahedrons, with their various descendants. |
| The cleaning layer has fully reticulated pores in a uniform network of substantially equilateral cells 34, such as tetrahedrons, truncated octahedrons and decahedrons. |
| The groundmass consists mainly of bytownite with large grains of diopside and of colourless olivine, and small octahedrons of magnetite. |
