The Face-centred and Base-centred Tetragonal Lattices
The face-centred and base-centred tetragonal lattices are redundant, as they are simply larger unit cells of the body-centred and primitive unit cells respectively.
Below shows the face-centred lattice in black, with the body-centred unit cell shown in orange.
Below shows the base-centred lattice in black, with the primitive unit cell shown in orange.
