Year: 2024
Type: article
Abstract: Ryugu asteroid grains brought back to the Earth by the Hayabusa2 space mission are pristine samples containing hydrated minerals and organic compounds. Here, we investigate the mineralogy of their phyllosilicate‐rich matrix with four‐dimensional scanning transmission electron microscopy (4D‐STEM). We have identified and mapped the mineral phases at the nanometer scale (serpentine, smectite, pyrrhotite), observed the presence of Ni‐bearing pyrrhotite, and identified the serpentine polymorph as lizardite, in agreement with the reported aqueous alteration history of Ryugu. Furthermore, we have mapped the d‐spacings of smectite and observed a broad distribution of values, ranging from 1 to 2 nm, with an average d‐spacing of 1.24 nm, indicating significant heterogeneity within the sample. Such d‐spacing variability could be the result of either the presence of organic matter trapped in the interlayers or the influence of various geochemical conditions at the submicrometer scale, suggestive of a range of organic compounds and/or changes in smectite crystal chemistry.
DOI: 10.1111/maps.14124
Authors: Bahae‐eddine Mouloud, Damien Jacob, Francisco de la Peña, Maya Marinova, Corentin Le Guillou, Jean‐Christophe Viennet, Sylvain Laforet, Hugues Leroux, Adrien Teurtrie, Takaaki Noguchi, Toru Matsumoto, Akira Miyake, Yohei Igami, Mitsutaka Haruta, Hikaru Saito, Satoshi Hata, Yusuke Seto, Masaaki Miyahara, Naotaka Tomioka, Hope A. Ishii, John P. Bradley, Kenta K. Ohtaki, Elena Dobrica, Falko Langenhorst, Dennis Harries, Pierre Beck, Thi H. V. Phan, Rolando Rebois, Neyda M. Abreu, Jennifer Gray, Thomas Zega, Pierre‐M. Zanetta, Michelle S. Thompson, Rhonda Stroud, Kate Burgess, Brittany A. Cymes, John C. Bridges, Leon Hicks, Martin R. Lee, Luke Daly, Phil A. Bland, Michael E. Zolensky, David R. Frank, James Martinez, Akira Tsuchiyama, Masahiro Yasutake, Junya Matsuno, Shota Okumura, Itaru Mitsukawa, Kentaro Uesugi, Masayuki Uesugi, Akihisa Takeuchi, Mingqi Sun, Satomi Enju, Aki Takigawa, Tatsuhiro Michikami, Tomoki Nakamura, Megumi Matsumoto, Yusuke Nakauchi, Masanao Abe, Satoru Nakazawa, Tatsuaki Okada, Takanao Saiki, Satoshi Tanaka, Fuyuto Terui, Makoto Yoshikawa, Akiko Miyazaki, Aiko Nakato, Masahiro Nishimura, Tomohiro Usui, Toru Yada, Hisayoshi Yurimoto, Kazuhide Nagashima, Noriyuki Kawasaki, Naoya Sakamotoa, Ryuji Okazaki, Hikaru Yabuta, Hiroshi Naraoka, Kanako Sakamoto, Shogo Tachibana, Sei‐ichiro Watanabe, Yuichi Tsuda
Institutions: Centre National de la Recherche Scientifique, Université de Lille, Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement, Unité Matériaux et Transformations, Centrale Lille Institut, Institut Michel-Eugène Chevreul, Université d'Artois, Kyoto University, The Hakubi Center for Advanced Research, Kyoto University, Kyoto University Institute for Chemical Research, Kyushu University, Institute for Materials Chemistry and Engineering, Kyushu University, The Ultramicroscopy Research Center, Kyushu University, Osaka Metropolitan University, Hiroshima University, Japan Agency for Marine-Earth Science and Technology, University of Hawaiʻi at Mānoa, Friedrich Schiller University Jena, Luxembourg Institute of Science and Technology, European Space Resources Innovation Centre, Institut de Planétologie et d'Astrophysique de Grenoble, Université Grenoble Alpes, Langley Research Center, Pennsylvania State University, University of Arizona, Purdue University West Lafayette, Arizona State University, United States Naval Research Laboratory, Naval Research Laboratory Materials Science and Technology Division, University of Leicester, University of Glasgow, The University of Sydney, University of Oxford, Sydney Microscopy & Microanalysis, Curtin University, Johnson Space Center, Jacobs (United States), Ritsumeikan University, Chinese Academy of Sciences, Guangzhou Institute of Geochemistry, Japan Synchrotron Radiation Research Institute, University of Chinese Academy of Sciences, Ehime University, The University of Tokyo, Kindai University, Tohoku University, Japan Aerospace Exploration Agency, Institute of Space and Astronautical Science, The Graduate University for Advanced Studies, SOKENDAI, Kanagawa Institute of Technology, Hokkaido University, Institute for Integrated Innovations, Hokkaido University, Nagoya University
Language: English
Topic: Astro and Planetary Science
Subfield: Space and Planetary Science
Field: Earth and Planetary Sciences
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $3,240
Funders: National Aeronautics and Space Administration, Université de Lille, Agence Nationale de la Recherche, Centre National d’Etudes Spatiales, Centre National de la Recherche Scientifique, Institut Chevreul, Science and Technology Facilities Council, European Research Council, Japan Society for the Promotion of Science, Japan Aerospace Exploration Agency
Awards: Understanding of the diversity of prebiotic chemistries and emergence of molecular systems in various planetary environments in the Solar System, The cosmic carbon observatory, Evolution of organic materials promoted by space weathering, Construction of an unifying model of formation and evolution of primordial material in the solar system, G6991624444, Visualization of Electronic Orbitals Using Transmission Electron Microscopy, G8810113123
OpenAlex ID: W4390638413