In this session, we expect contributions from researchers who provide petrological, geochemical, and experimental evidences for the nature and the activity of mantle-derived fluids (melts and supercritical volatile rich fluids), which provoke the formation of kimberlites and related magmas in the Continental Lithosphere. We are specially interested in highly alkalic silicate-carbonate-chloride fluids closely related to diamond formation, and to the evolution of kimberlites and deep-seated carbonatites. Special attention will paid to experimental studies of physical and rheological properties of alkali-rich melts and fluids at HP-HT conditions, their phase equilibria and the partitioning of major, trace and volatile components at mantle conditions. This session is aimed at creating tools for better understanding of deep-seated processes leading to kimberlitic and carbonatitic magmatism in the mantle.