All, Please consider submitting an abstract to the GSA Annual meeting session honoring Roebling Medalist Darby Dyar entitled "Advancing Mineralogy and Spectroscopy Across the Solar System in Honor of MSA Roebling Medalist M. Darby Dyar". This session welcomes abstracts describing mineralogy and spectroscopy of all planetary bodies, especially the Earth, Moon, Mars, and Venus that have been the focus of much of Dyar's career. Topics including iron valence, mineral structures, mantle processes, and surface reactions, as well as spectroscopic techniques including Mössbauer, Raman, mid-infrared, visible/near-infrared, XANES, and LIBS would all be appreciated. Colleagues who worked with Dyar and who benefitted from her insights or research results are particularly invited. The GSA Annual meeting takes place October 19-22, 2025, in San Antonio, Texas. Abstracts are due by August 5, 2025. Best, Molly McCanta & Janice Bishop (session organizers)