Dear Colleagues, The abstract deadline for the 4th European Mineralogical Conference in Dublin, 18-23 of August 2024, is fast approaching (22nd of March)! https:// emc-2024.org/abstract-submission/ Please consider submitting an abstract to the session "*Volatile cycling at subduction zones and its geochemical consequences: Insights from field studies, experiments and modeling*" *Session description:* In subduction environments fluids produced by mineral decomposition can contain variable proportions of C, H, S, halogens and other volatile species. These compounds play a pivotal role in regulating the mass transfers between the crust and the mantle: They are responsible for a variety of geological processes that include metamorphism, metasomatism, metal mobilization, redox transformations, and production of volcanic gaseous emissions. Feedbacks between these processes control the extent to which volatiles are released, exchanged and stored between Earth’s geochemical reservoirs on geologic timescales. Addressing these points is critical to quantifying fluid-mediated tectonometamorphic processes, the distribution and resource potential of arc-related ore deposits, and evolution of Earth’s climate. In this session contributions providing multi-scale insights on the cycle of C, H, S, halogens and other volatile species through field studies, experiments and modeling are equally encouraged. *Invited speakers:* *José Alberto Padrón-Navarta *(EMU medalist keynote) - Redox dehydration in subduction zones *Francesco Giuntoli *(keynote) - The migration of methane-hydrogen-rich fluids may trigger seismic failure in subduction zones at forearc depths We hope to see you in Dublin! Luca Toffolo, Melanie Sieber, Giulia Consuma, Jesse Walters -- Jesse B. Walters Ambizione Fellow Institut für Geologie Universität Bern