Dear Colleagues: The 24th General meeting of the International Mineralogical Association (IMA) will be held August 20-24, 2026 in Nanjing, China. We invite you to submit a session proposal on topic(s) related to your expertise. The session proposal for IMA2026 is will close on August 31st. Please visit the meeting website, IMA 2026<https://ima2026.nju.edu.cn/> ,where you will find information about the meeting and beautiful city of Nanjing. Access to the submission site for session proposals can be found here: IMA 2026 Nanjing<https://ima2026.nju.edu.cn/admin/login>. You can submit your session proposal after logging on. The 2nd Vice-President, Professor Xiancai Lu and his LOC in Nanjing are organizing the meeting and wish to ensure that the next general assembly will be a great success. We are looking forward to receiving your session proposals for IMA2026. Best wishes, Eiji Ohtani, President of IMA Nancy Ross, 1st-vice President of IMA Xiancai Lu, 2nd Vice President of IMA Hans-Peter Schertl, Past-President of IMA