Dear Colleagues and MSA members, Greetings! The Spring 2020 ACS National Meeting will be held in Philadelphia on March 22-26, 2020. We cordially invite you to submit your abstract to our session on Division of Geochemistry “Iron Oxides: Their Phase Transformations, Structures, Kinetics, & Applications". Session details are listed below. Please spread the word if you think anyone would be interested. Feel free to contact us if you have any questions! We look forward to seeing you in Philadelphia, PA! Happy abstracting, Conveners: Si Athena Chen (Penn State University, szc81@psu.edu<mailto:szc81@psu.edu> ) Xin Gu (Penn State University, xug102@psu.edu<mailto:xug102@psu.edu> ) Jinshu Yan (Washington University in St. Louis, jinshu@wustl.edu<mailto:jinshu@wustl.edu> ) Session Description : Iron oxide transformations in surface environments are profoundly influenced by a complex variety of geochemical factors, such as inorganic material (e.g., clays, contaminants, trace elements), organic matter (e.g., microbes), temperature, and solution pH. The complicated transformation processes among iron oxides can involve redox reactions between Fe2+/Fe3+, adsorption of foreign species, microbial activity, dissolution of precursors, and crystallization. To address the structural evolution of iron oxides, numerous approaches have emerged in the last few decades, including in-situ diffraction, real-time spectroscopy, high-resolution electron microscopy, 3D SIMS mapping, and computational modeling in DFT or MD simulations. Although these techniques provide detailed analyses of crystal structures and surface reactions, fundamental questions regarding iron oxide transformation pathways, mechanisms, and kinetics are far from being well understood. This session welcomes contributions from field-based, experimental, and computational approaches highlighting recent advances in (bio)geochemical and mineralogical processes of iron oxides, including: abiotic and biogenic iron oxides, mechanisms of iron oxide (trans)formation, organic and contaminant adsorption of iron oxides, iron oxides and water surface interactions, iron redox transitions, and iron oxide applications in industry. Abstracts are due by October 14th, 2019. https://callforpapers.acs.org/philadelphia2020/GEOC - - Si Athena Chen Ph.D. Student Department of Geosciences 312 Deike Building Penn State University University Park, PA 16802