Anastasia G. Ilgen is a staff scientist in the Geochemistry Department at Sandia National Laboratories. She is an experimental geochemist, specializing in molecular-level processes at mineral-water interfaces, with emphasis on ion adsorption-desorption rate and mechanisms, chemical controls on mineral growth and dissolution, and surface-mediated redox reactions. At Sandia National Laboratories she has built research programs relevant to the geological carbon storage, chemical-mechanical effects in geosystems, and fundamental research on clay mineral-water interfacial chemistry.