There have been a number of remarkable advances in our understanding of igneous processes and magma dynamics, including partial melting of the mantle and primary magma generation, magma differentiation, volcanic eruption, ore formation, contact metamorphism and metasomatism. Most of these studies are based on state-of-the-art Earth materials science, such as high-resolution geochemical analysis and small-scale observation of mantle xenoliths, volcanic and plutonic rocks, volcanic gases, and hot spring waters. The purpose of this special session is to discuss and promote the latest studies related to the dynamics of igneous processes. We welcome multidisciplinary contributions based on field observations, analyses of natural samples, high P/T experiments and theoretical modelling.

Note that oral presentations for this session at the 2026 conference are planned to be held online concurrently with the Japan Volcanological Society conference. Oral presentations will consist solely of invited speakers. Poster presentations (on-site only) will be open for general submission.

On the Earth's surface, minerals interact closely with water, the atmosphere, and life, playing a central role in material transport, fixation, and biological utilization. This session invites presentations on minerals involved in these interactions, covering topics ranging from fundamental studies on crystal structures and textures, surface and interfacial processes, dissolution and growth, adsorption and desorption of ions and organic matter, and changes in physical properties, to research on interaction-induced changes, environmental impacts, and environmentally harmonious applications of minerals. We broadly target minerals present in the Earth's surface, including clay minerals, carbonate minerals, zeolites, and biominerals, and welcome studies employing any approach—field investigations, laboratory experiments and analyses, or numerical simulations.

In addition, this year we also welcome presentations and discussions related to the research area “Transformative Research Area (B): Carbonate Biology.”

We welcome contributions on mineralogical sciences of extraterrestrial materials such as presolar grains, cosmic dust, meteorites, lunar samples, and return samples.

This session accepts a wide range of scientific topics about petrology, mineralogy, economic geology, and geochemistry using terrestrial and planetary materials. We welcome various presentations and discussions about constituent materials of the Earth and other planets.