Experimental and theoretical mineral physics, geophysical observations and modeling, all contribute to improve our understanding of the inner Earth's properties. The most recent developments and results in the different fields are modifying our picture of the lower mantle and they are creating new opportunities for fruitful cooperation between specialists in the different disciplines. The combination of different scientific perspectives is necessary for the development of a consistent model of the Earth's mantle that can satisfy both large scale geophysical constraints and the properties of the constituent minerals at the microscale. The goal of this session is to give a comprehensive picture of our current view of deep Earth based on the latest results from mineralogy, experimental/theoretical mineral physics as well as from the geophysical/seismological research. Contributions from experimental and numerical studies of physical properties at high pressures/temperatures, geophysical, seismological and tomographic studies are encouraged.