| No two of these arrangements were alike, and the pattern did not repeat itself over a long range like an ordinary crystal lattice. |
| For example, certain spots in a crystal lattice may remain vacant, or a lattice may have an unequal number of anion and cation sites. |
| Crystallographers describe the repeating unit of a crystal lattice, the unit cell, by the length of its edges and angles between them. |
| This zero intensity point is equivalent to a dislocation on a crystal lattice. |
| The next step was therefore to check that only one crystal phase was present and to determine the crystal lattice. |
| This crystalline structure is an orderly arrangement of ions known as a crystal lattice. |
