Introduction to crystallography

Geometric crystallography studies the external morphology of crystals and their symmetry, and the geometry and symmetry of the lattice

From a macroscopic point of view, crystalline matter can be considered a homogeneous and continuous medium, anisotropic, and symmetrical

The concept of the real crystal must be introduced, and its imperfections must be considered, contrary to geometric crystallography

Physical crystallography or crystallophysics studies the physical properties of crystals, trying to relate them to the chemical composition and structure