Anastasia G. Ilgen is a senior member of technical staff in the Geochemistry Department at Sandia National Laboratories. She is a co-principal investigator at the Center for Frontiers of Subsurface Energy Security (CFSES). She is an experimental geochemist, specializing in molecular-level processes at mineral-water interfaces: alteration of shale caprock by carbon dioxide/brine mixtures, chemical controls on surface-mediated redox reactions, and mineral growth and dissolution.