Crystal Structure — Species — Crystallisation -- Crystal Chemistry of Clay Minerals -- Energy Balances: Thermodynamics — Kinetics -- Isotopic Composition of Clay Minerals -- Surface Properties — Behaviour Rules — Microtextures -- Clays in Soils and Weathered Rocks -- Clays in Sedimentary Environments -- Diagenesis and Very Low-Grade Metamorphism -- Hydrothermal Process — Thermal Met…