Dear colleagues, We invite you to submit an abstract to *Session 9.2 - 'Tracking subduction-zone fluids via minerals: Advances in natural and experimental approaches'* for the IMA (International Mineralogical Association) general meeting in Nanjing, China (August 20–24, 2026). The session description can be found below. We are pleased to announce that lectures will be provided by the following keynote and invited speakers. - Keynote speaker: *Yi-Xiang Chen* (University of Science and Technology of China) - Invited speakers: *Ryosuke Oyanagi* (Kokushikan University) and *Marija Putak Juriček *(University of Arizona) The abstract deadline is *March 15th, 2026. *Visit the website ( https://ima2026.nju.edu.cn/_s806/main.psp) for more details. If you have any questions, do not hesitate to contact us. We look forward to your contributions and hope to see you in Nanjing! Best regards, Ryo Fukushima (Kochi Institute for Core Sample Research, JAMSTEC / Visiting scholar at Goethe University Frankfurt) Yongsheng Huang (Guangzhou Institute of Geochemistry, Chinese Academy of Sciences) Jesse B. Walters (University of Graz) Tatsuki Tsujimori (Tohoku University) ----- Session description ----- Supercritical fluids play critical roles in global mass cycling and geodynamic processes within subduction zones. Field observations from high-pressure and ultrahigh-pressure orogenic belts along convergent margins reveal pervasive fluid flow, extensive fluid-rock interactions, and clear relationships between rock deformation and fluid migration. Isotopic analyses of minerals in slab-derived metamorphic rocks and associated mantle materials provide key constraints on deep-sourced fluid origins. Recent advances in thermodynamic datasets for high-pressure fluids now enable more refined characterization of aqueous fluid compositions, while high-pressure and high-temperature experimental simulations offer valuable insights into fluid distribution and inventory in Earth's interior. Improved understanding of fluid distribution, migration mechanisms, and their geochemical-geophysical responses enhances our knowledge of global material cycles and geodynamics. This session highlights recent advances in understanding fluid properties and behavior in subduction zones, particularly encouraging contributions that investigate fluid chemistry, fluid-rock reaction kinetics, and fluid migration mechanisms across scales (meter to nanometer) through petrological, geochemical, experimental, tectonic, and numerical modeling approaches, aiming to foster interdisciplinary collaboration in subduction zone research. -------------------- -- Ryo Fukushima, Ph.D. Postdoctoral Researcher/JSPS Research Fellow Kochi Institute for Core Sample Research, JAMSTEC ryofuku@jamstec.go.jp https://orcid.org/0000-0003-2683-6757