T. Peretyazhko

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About

Dr. T. Peretyazhko is a leading geochemist whose research bridges planetary science and mineralogy, with a focus on the aqueous geochemistry of Mars and Earth. Their key contributions center on understanding how iron-bearing minerals interact with anions in extreme environments, particularly on the Martian surface. Peretyazhko’s most cited work, "Reaction of Akaganeite with Mars-Relevant Anions" (2019, 16 citations), demonstrates that akaganeite—an Fe(III) (hydr)oxide with chloride-filled tunnels—can undergo anion-exchange reactions, incorporating other Mars-relevant anions alongside chloride. This finding is critical for interpreting the mineralogical record of past aqueous activity on Mars, as the presence of specific anions in akaganeite tunnels may serve as a proxy for ancient brine chemistry. Their research has implications for understanding planetary habitability and the geochemical cycling of volatiles. Peretyazhko’s work is widely recognized for its innovative approach to linking laboratory experiments with remote sensing data, advancing our knowledge of Mars’ environmental history. With a growing citation impact, they continue to shape the field of planetary geochemistry.