2022 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)
Sep 17 - Sep 19, 2022新潟大学 五十嵐キャンパス
2022 Annual Meeting of Japan Association of Mineralogical Sciences (JAMS)
Sep 17 - Sep 19, 2022新潟大学 五十嵐キャンパス
[R5-09]Deposited materials on space weathered anhydrous minerals from asteroid Ryugu
*Toru Matsumoto1, Takaaki Noguchi1,2, Akira Miyake1, Yohei Igami1, Mitsutaka Haruta1, Hikaru Saito2, Satoshi Hata2, Yusuke Seto3, Masaaki Miyahara4, Naotaka Tomioka5, Hisayoshi Yurimoto6, Tomoki Nakamura7, Hikaru Yabuta4, Hiroshi Naraoka2, Ryuji Okazaki2(1. Kyoto Univ, 2. Kyushu Univ. , 3. Osaka Metropolitan Univ. Sci., 4. Hiroshima Univ. Sci., 5. JMASTEC, 6. Hokkaido Univ. Sci., 7. Tohoku Univ. Sci.)
Keywords:
Hayabusa 2,Ryugu,Space weathering
Space weathering of carbonaceous asteroids has not been well understood. Ryugu samples will offer insights into the ongoing alteration of the regolith of Ryugu. We examined the space weathering of Ryugu samples as the initial analysis by the Mineralogy-Petrology Fine (Sand) sub-team. We found that the loss of volatiles and the resultant reduction of iron may represent the major modification of space weathering ongoing on the surface of Ryugu.