[MIS07-P12] Effective formation of Al-rich surface clays through acidic water activity on early Mars
*Mitsuteru Sugiuchi1, Yasuhito Sekine2, Shuya Tan2,3, Natsumi Noda2,3, Yoshio Takahashi3, Ramses M Ramirez2 (1.Department of Earth and Planetary Science, School of Science, Tokyo Institute of Technology, 2.Earth-Life Science Institute, Tokyo Institute of Technology, 3.Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo)