Primitive Bravais Lattices
If you take all the symmetry elements and combine them with a lattice, you come up the 14 Bravais lattices. 7 of these are what are called primitive lattices because they contain one lattice point per unit cell. (We'll get to non-primitive lattices in a little bit). Here's a tabulation of the 7 primitive lattices showing their names and the conditions relating their unit cell parameters.
monoclinic (first setting) -
monoclinic (second setting) - (most common orientation)
trigonal - rhombohedral lattice -
(can also be described with a hexagonal unit cell: )
copyright © Ron Stenkamp firstname.lastname@example.org Most recent update 4/1/03