Dear Colleagues, We would like to draw your attention to the IMA Commission on Ore Mineralogy session *“Chalcophile and highly siderophile elements in ore-forming systems: a mineralogical perspective”* (Theme 3: Critical Minerals), to be held during the 24th General Meeting of the International Mineralogical Association in Nanjing, China, 20–24 August 2026. Session description: https://ima2026.nju.edu.cn/53/0e/c65014a807694/page.psp Abstract submission: https://ima2026.nju.edu.cn/_s806/53/21/c61592a807713/page.psp Please note that the extended abstract submission deadline is *today *(*5 May).* We look forward to a stimulating session and warmly encourage contributions from our community. Kind regards, Jakub Ciążela (Institute of Geological Sciences, Polish Academy of Sciences) Malte Junge (Natural History Museum of Bern) Kunfeng Qiu (China University of Geosciences, Beijing) -- Dr. Jakub Ciazela Institute of Geological Sciences Polish Academy of Sciences ul. Podwale 75, 50-449 Wrocław, Poland https://www.ing.pan.pl/en/staff/staff-websites/jakub-ciazelahttps://scholar.google.com/citations?user=RhLe0CAAAAAJ&hl=en