Introduction -- Thermal Evolution of Kaolinite -- Thermal Methods -- Extraction Techniques -- X-Ray Methods -- Electron Microscopy Study -- I.R. Study -- XRF Study -- Radial Electron Density Distribution (RED) -- Density & Surface Area Measurement -- Crystallization Studies of Preheated Metakaolinite -- Thermodynamic Approach -- MAS NMR -- QXRD Studies of Phases Formed -- Scanning Electron Microscopic (SEM) Study -- Hot Pressing (RHP) Study -- NAOH Leaching Study -- Various Ways of Characterization of Alkali Leached Residue -- Meta Kaolinite Phase -- Spinel Phase -- Mullite Phase -- Reasons for First and Second Exothermic Peaks -- Cristobalite Phase -- Topotaxy in K-MK-AL/SI Spinel-Mullite Reaction Series -- Dehydroxylation Mechanism -- Final Conclusion on the Thermal Effects of Kaolinite -- Bibliography.