🔘 AGY203. CRYSTALLOGRAPHY
*CRYSTALLOGRAPHY & MINERAL CRYSTAL SYSTEM* Crystallography is simple the study of crystals, study of growth, shape and geometric character of crystals. Each chemical element and compound tends to crystallize in a definite and characteristic firm when condition is favourable. Crystallography is divided into 3 sections:- (i) Geometrical (ii) Physical and (iii) Chemical *CRYSTAL* A Crystal is a regular polyhedral form, bounded by smooth face, which us assumed by a chemical compound, due to the action if its inter-atomic forces, when passing under suitable conditions, from state I'd a liquid or gas to that of a solid *CRYSTAL FACE* This is a polyhedral form that is bounded by flat planes. *Note:-* Crystal normally forms during the change of matter from liquid or gas to the solid state. There are geometric forms which are subdivided into:- A. Cubic / Isometric B. Tetragonal C. Orthorhombic D. Monoclinic E. Hexagonal F. Triclinic *STENO'S LAW OF CONSTAN...