1. Because of crystalline periodicity, significant directions within a crystal are determined by the rational intercepts with the Crystallographic axes and may be rendered in terms of Miller indices enclosed in brackets, e.g., [hkl] or [hkil].

2. Crystallographic PLANES Crystallographic planes specified by 3 Miller indices as (hkl) Procedure for determining h,k and l: Z If plane passes through origin, translate plane or choose new origin Determine intercepts of planes on each of the axes in …