R5: Extraterrestrial materials

[R5-07] Shock recovery experiments of jarosite

Kohei Kawano², *Masaaki Miyahara¹, Takamichi Kobayashi³, Toshimori Sekine⁴, Hiroki Suga⁵, Yoshio Takahashi⁶ (1. Hiroshima Uni., 2. Sci. Hiroshima Uni., 3. NIMS, 4. Osaka Univ., 5. JASRI, 6. Univ. of Tokyo)

Keywords:Mars, jarosite, shock experiment, dehydration

Shock recovery experiments of jarosite and natrojarosite were conducted in the shock pressure range of 13–41 GPa to clarify shock-induced dehydration. Based on the XRD/DTA analysis of recovered samples, jarosite decomposes into hematite (+magnetite) and FeSO₄ with the dehydration of OH above ~23 GPa.