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Yokoyama T, Nagashima K, Nakai I, Young ED, Abe Y, Aléon J, Alexander CMO, Amari S, Amelin Y, Bajo KI, Bizzarro M, Bouvier A, Carlson RW, Chaussidon M, Choi BG, Dauphas N, Davis AM, Di Rocco T, Fujiya W, Fukai R, Gautam I, Haba MK, Hibiya Y, Hidaka H, Homma H, Hoppe P, Huss GR, Ichida K, Iizuka T, Ireland TR, Ishikawa A, Ito M, Itoh S, Kawasaki N, Kita NT, Kitajima K, Kleine T, Komatani S, Krot AN, Liu MC, Masuda Y, McKeegan KD, Morita M, Motomura K, Moynier F, Nguyen A, Nittler L, Onose M, Pack A, Park C, Piani L, Qin L, Russell SS, Sakamoto N, Schönbächler M, Tafla L, Tang H, Terada K, Terada Y, Usui T, Wada S, Wadhwa M, Walker RJ, Yamashita K, Yin QZ, Yoneda S, Yui H, Zhang AC, Connolly HC, Lauretta DS, Nakamura T, Naraoka H, Noguchi T, Okazaki R, Sakamoto K, Yabuta H, Abe M, Arakawa M, Fujii A, Hayakawa M, Hirata N, Hirata N, Honda R, Honda C, Hosoda S, Iijima YI, Ikeda H, Ishiguro M, Ishihara Y, Iwata T, Kawahara K, Kikuchi S, Kitazato K, Matsumoto K, Matsuoka M, Michikami T, Mimasu Y, Miura A, Morota T, Nakazawa S, Namiki N, Noda H, Noguchi R, Ogawa N, Ogawa K, Okada T, Okamoto C, Ono G, Ozaki M, Saiki T, Sakatani N, Sawada H, Senshu H, Shimaki Y, Shirai K, Sugita S, Takei Y, Takeuchi H, Tanaka S, Tatsumi E, Terui F, Tsuda Y, Tsukizaki R, Wada K, Watanabe SI, Yamada M, Yamada T, Yamamoto Y, Yano H, Yokota Y, Yoshihara K, Yoshikawa M, Yoshikawa K, Furuya S, Hatakeda K, Hayashi T, Hitomi Y, Kumagai K, Miyazaki A, Nakato A, Nishimura M, Soejima H, Suzuki A, Yada T, Yamamoto D, Yogata K, Yoshitake M, Tachibana S, Yurimoto H. Samples returned from the asteroid Ryugu are similar to Ivuna-type carbonaceous meteorites. Science 2023; 379:eabn7850. [PMID: 35679354 DOI: 10.1126/science.abn7850] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Carbonaceous meteorites are thought to be fragments of C-type (carbonaceous) asteroids. Samples of the C-type asteroid (162173) Ryugu were retrieved by the Hayabusa2 spacecraft. We measured the mineralogy and bulk chemical and isotopic compositions of Ryugu samples. The samples are mainly composed of materials similar to those of carbonaceous chondrite meteorites, particularly the CI (Ivuna-type) group. The samples consist predominantly of minerals formed in aqueous fluid on a parent planetesimal. The primary minerals were altered by fluids at a temperature of 37° ± 10°C, about [Formula: see text] million (statistical) or [Formula: see text] million (systematic) years after the formation of the first solids in the Solar System. After aqueous alteration, the Ryugu samples were likely never heated above ~100°C. The samples have a chemical composition that more closely resembles that of the Sun's photosphere than other natural samples do.
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Affiliation(s)
- Tetsuya Yokoyama
- Department of Earth and Planetary Sciences, Tokyo Institute of Technology, Tokyo 152-8551, Japan
| | - Kazuhide Nagashima
- Hawai'i Institute of Geophysics and Planetology, University of Hawai'i at Mānoa, Honolulu, HI 96822, USA
| | - Izumi Nakai
- Department of Applied Chemistry, Tokyo University of Science, Tokyo 162-8601, Japan
| | - Edward D Young
- Department of Earth, Planetary, and Space Sciences, University of California, Los Angeles, CA 90095, USA
| | - Yoshinari Abe
- Graduate School of Engineering Materials Science and Engineering, Tokyo Denki University, Tokyo 120-8551, Japan
| | - Jérôme Aléon
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, Sorbonne Université, Museum National d'Histoire Naturelle, Centre National de la Recherche Scientifique Unité Mixte de Recherche 7590, Institut de recherche pour le développement, 75005 Paris, France
| | - Conel M O'D Alexander
- Earth and Planets Laboratory, Carnegie Institution for Science, Washington, DC 20015, USA
| | - Sachiko Amari
- McDonnell Center for the Space Sciences and Physics Department, Washington University, St. Louis, MO 63130, USA
| | - Yuri Amelin
- Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, GD 510640, China
| | - Ken-Ichi Bajo
- Department of Natural History Sciences, Hokkaido University, Sapporo 001-0021, Japan
| | - Martin Bizzarro
- Centre for Star and Planet Formation, Globe Institute, University of Copenhagen, K 1350 Copenhagen, Denmark
| | - Audrey Bouvier
- Bayerisches Geoinstitut, Universität Bayreuth, 95447 Bayreuth, Germany
| | - Richard W Carlson
- Earth and Planets Laboratory, Carnegie Institution for Science, Washington, DC 20015, USA
| | - Marc Chaussidon
- Université de Paris, Institut de physique du globe de Paris, Centre National de la Recherche Scientifique, 75005 Paris, France
| | - Byeon-Gak Choi
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea
| | - Nicolas Dauphas
- Department of the Geophysical Sciences and Enrico Fermi Institute, University of Chicago, Chicago, IL 60637, USA
| | - Andrew M Davis
- Department of the Geophysical Sciences and Enrico Fermi Institute, University of Chicago, Chicago, IL 60637, USA
| | - Tommaso Di Rocco
- Faculty of Geosciences and Geography, University of Göttingen, D-37077 Göttingen, Germany
| | - Wataru Fujiya
- Faculty of Science, Ibaraki University, Mito 310-8512, Japan
| | - Ryota Fukai
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Ikshu Gautam
- Department of Earth and Planetary Sciences, Tokyo Institute of Technology, Tokyo 152-8551, Japan
| | - Makiko K Haba
- Department of Earth and Planetary Sciences, Tokyo Institute of Technology, Tokyo 152-8551, Japan
| | - Yuki Hibiya
- Department of General Systems Studies, University of Tokyo, Tokyo 153-0041, Japan
| | - Hiroshi Hidaka
- Department of Earth and Planetary Sciences, Nagoya University, Nagoya 464-8601, Japan
| | - Hisashi Homma
- Osaka Application Laboratory, Rigaku Corporation, Osaka 569-1146, Japan
| | - Peter Hoppe
- Max Planck Institute for Chemistry, Mainz 55128, Germany
| | - Gary R Huss
- Hawai'i Institute of Geophysics and Planetology, University of Hawai'i at Mānoa, Honolulu, HI 96822, USA
| | - Kiyohiro Ichida
- Analytical Technology Division, Horiba Techno Service Co. Ltd., Kyoto 601-8125, Japan
| | - Tsuyoshi Iizuka
- Department of Earth and Planetary Science, University of Tokyo, Tokyo 113-0033, Japan
| | - Trevor R Ireland
- School of Earth and Environmental Sciences, University of Queensland, St Lucia, QLD 4072, Australia
| | - Akira Ishikawa
- Department of Earth and Planetary Sciences, Tokyo Institute of Technology, Tokyo 152-8551, Japan
| | - Motoo Ito
- Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology, Kochi 783-8502, Japan
| | - Shoichi Itoh
- Department of Earth and Planetary Sciences, Kyoto University, Kyoto 606-8502, Japan
| | - Noriyuki Kawasaki
- Department of Natural History Sciences, Hokkaido University, Sapporo 001-0021, Japan
| | - Noriko T Kita
- Department of Geoscience, University of Wisconsin, Madison, WI 53706, USA
| | - Kouki Kitajima
- Department of Geoscience, University of Wisconsin, Madison, WI 53706, USA
| | - Thorsten Kleine
- Max Planck Institute for Solar System Research, 37077 Göttingen, Germany
| | - Shintaro Komatani
- Analytical Technology Division, Horiba Techno Service Co. Ltd., Kyoto 601-8125, Japan
| | - Alexander N Krot
- Hawai'i Institute of Geophysics and Planetology, University of Hawai'i at Mānoa, Honolulu, HI 96822, USA
| | - Ming-Chang Liu
- Department of Earth, Planetary, and Space Sciences, University of California, Los Angeles, CA 90095, USA
| | - Yuki Masuda
- Department of Earth and Planetary Sciences, Tokyo Institute of Technology, Tokyo 152-8551, Japan
| | - Kevin D McKeegan
- Department of Earth, Planetary, and Space Sciences, University of California, Los Angeles, CA 90095, USA
| | - Mayu Morita
- Analytical Technology Division, Horiba Techno Service Co. Ltd., Kyoto 601-8125, Japan
| | - Kazuko Motomura
- Thermal Analysis Division, Rigaku Corporation, Tokyo 196-8666, Japan
| | - Frédéric Moynier
- Université de Paris, Institut de physique du globe de Paris, Centre National de la Recherche Scientifique, 75005 Paris, France
| | - Ann Nguyen
- Astromaterials Research and Exploration Science Division, National Aeronautics and Space Administration Johnson Space Center, Houston, TX 77058, USA
| | - Larry Nittler
- Earth and Planets Laboratory, Carnegie Institution for Science, Washington, DC 20015, USA
| | - Morihiko Onose
- Analytical Technology Division, Horiba Techno Service Co. Ltd., Kyoto 601-8125, Japan
| | - Andreas Pack
- Faculty of Geosciences and Geography, University of Göttingen, D-37077 Göttingen, Germany
| | - Changkun Park
- Division of Earth-System Sciences, Korea Polar Research Institute, Incheon 21990, Korea
| | - Laurette Piani
- Centre de Recherches Pétrographiques et Géochimiques, Centre National de la Recherche Scientifique-Université de Lorraine, 54500 Nancy, France
| | - Liping Qin
- School of Earth and Space Sciences, University of Science and Technology of China, Anhui 230026, China
| | - Sara S Russell
- Department of Earth Sciences, Natural History Museum, London SW7 5BD, UK
| | - Naoya Sakamoto
- Isotope Imaging Laboratory, Hokkaido University, Sapporo 001-0021, Japan
| | - Maria Schönbächler
- Institute for Geochemistry and Petrology, Department of Earth Sciences, ETH Zurich, Zurich, Switzerland
| | - Lauren Tafla
- Department of Earth, Planetary, and Space Sciences, University of California, Los Angeles, CA 90095, USA
| | - Haolan Tang
- Department of Earth, Planetary, and Space Sciences, University of California, Los Angeles, CA 90095, USA
| | - Kentaro Terada
- Department of Earth and Space Science, Osaka University, Osaka 560-0043, Japan
| | - Yasuko Terada
- Spectroscopy and Imaging Division, Japan Synchrotron Radiation Research Institute, Hyogo 679-5198, Japan
| | - Tomohiro Usui
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Sohei Wada
- Department of Natural History Sciences, Hokkaido University, Sapporo 001-0021, Japan
| | - Meenakshi Wadhwa
- School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85281, USA
| | - Richard J Walker
- Department of Geology, University of Maryland, College Park, MD 20742, USA
| | - Katsuyuki Yamashita
- Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan
| | - Qing-Zhu Yin
- Department of Earth and Planetary Sciences, University of California, Davis, CA 95616, USA
| | - Shigekazu Yoneda
- Department of Science and Engineering, National Museum of Nature and Science, Tsukuba 305-0005, Japan
| | - Hiroharu Yui
- Department of Chemistry, Tokyo University of Science, Tokyo 162-8601, Japan
| | - Ai-Cheng Zhang
- School of Earth Sciences and Engineering, Nanjing University, Nanjing 210023, China
| | - Harold C Connolly
- Department of Geology, School of Earth and Environment, Rowan University, Glassboro, NJ 08028, USA
| | - Dante S Lauretta
- Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ 85705, USA
| | - Tomoki Nakamura
- Department of Earth Science, Tohoku University, Sendai 980-8578, Japan
| | - Hiroshi Naraoka
- Department of Earth and Planetary Sciences, Kyushu University, Fukuoka 819-0395, Japan
| | - Takaaki Noguchi
- Department of Earth and Planetary Sciences, Kyoto University, Kyoto 606-8502, Japan
| | - Ryuji Okazaki
- Department of Earth and Planetary Sciences, Kyushu University, Fukuoka 819-0395, Japan
| | - Kanako Sakamoto
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Hikaru Yabuta
- Earth and Planetary Systems Science Program, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
| | - Masanao Abe
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Masahiko Arakawa
- Graduate School of Science, Kobe University, Kobe 657-8501, Japan
| | - Atsushi Fujii
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Masahiko Hayakawa
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Naoyuki Hirata
- Graduate School of Science, Kobe University, Kobe 657-8501, Japan
| | - Naru Hirata
- Department of Computer Science and Engineering, University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - Rie Honda
- Faculty of Science and Technology, Kochi University, Kochi 780-8520, Japan
| | - Chikatoshi Honda
- Department of Computer Science and Engineering, University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - Satoshi Hosoda
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Yu-Ichi Iijima
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Hitoshi Ikeda
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Masateru Ishiguro
- Department of Physics and Astronomy, Seoul National University, Seoul 08826, Republic of Korea
| | - Yoshiaki Ishihara
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Takahiro Iwata
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan.,Graduate University for Advanced Studies, Sokendai, Kanagawa 240-0193, Japan
| | - Kosuke Kawahara
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Shota Kikuchi
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - Kohei Kitazato
- Department of Computer Science and Engineering, University of Aizu, Aizu-Wakamatsu 965-8580, Japan
| | - Koji Matsumoto
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan
| | - Moe Matsuoka
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | | | - Yuya Mimasu
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Akira Miura
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Tomokatsu Morota
- Department of Earth and Planetary Science, University of Tokyo, Tokyo 113-0033, Japan
| | - Satoru Nakazawa
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Noriyuki Namiki
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan
| | - Hirotomo Noda
- National Astronomical Observatory of Japan, Mitaka 181-8588, Japan
| | - Rina Noguchi
- Academic Assembly Institute of Science and Technology, Niigata University, Niigata 950-2181, Japan
| | - Naoko Ogawa
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Kazunori Ogawa
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Tatsuaki Okada
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan.,Department of Chemistry, University of Tokyo, Tokyo 113-0033, Japan
| | - Chisato Okamoto
- Graduate School of Science, Kobe University, Kobe 657-8501, Japan
| | - Go Ono
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Masanobu Ozaki
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan.,Graduate University for Advanced Studies, Sokendai, Kanagawa 240-0193, Japan
| | - Takanao Saiki
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Naoya Sakatani
- College of Science Department of Physics, Rikkyo University, Tokyo 171-8501, Japan
| | - Hirotaka Sawada
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Hiroki Senshu
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - Yuri Shimaki
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Kei Shirai
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Seiji Sugita
- Department of Earth and Planetary Science, University of Tokyo, Tokyo 113-0033, Japan
| | - Yuto Takei
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Hiroshi Takeuchi
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Satoshi Tanaka
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Eri Tatsumi
- Instituto de Astrofísica de Canarias, University of La Laguna, Tenerife, Spain
| | - Fuyuto Terui
- Graduate School of Engineering, Kanagawa Institute of Technology, Atsugi 243-0292, Japan
| | - Yuichi Tsuda
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Ryudo Tsukizaki
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Koji Wada
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - Sei-Ichiro Watanabe
- Department of Earth and Planetary Sciences, Nagoya University, Nagoya 464-8601, Japan
| | - Manabu Yamada
- Planetary Exploration Research Center, Chiba Institute of Technology, Narashino 275-0016, Japan
| | - Tetsuya Yamada
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Yukio Yamamoto
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Hajime Yano
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Yasuhiro Yokota
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Keisuke Yoshihara
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Makoto Yoshikawa
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Kent Yoshikawa
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Shizuho Furuya
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | | | - Tasuku Hayashi
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Yuya Hitomi
- Marine Works Japan Ltd., Yokosuka 237-0063, Japan
| | | | - Akiko Miyazaki
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Aiko Nakato
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Masahiro Nishimura
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | | | - Ayako Suzuki
- Marine Works Japan Ltd., Yokosuka 237-0063, Japan
| | - Toru Yada
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Daiki Yamamoto
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Kasumi Yogata
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Miwa Yoshitake
- Institute of Space and Astronautical Science/Jaxa Space Exploration Center, Japan Aerospace Exploration Agency, Sagamihara 252-5210, Japan
| | - Shogo Tachibana
- UTokyo Organization for Planetary and Space Science, University of Tokyo, Tokyo 113-0033, Japan
| | - Hisayoshi Yurimoto
- Department of Natural History Sciences, Hokkaido University, Sapporo 001-0021, Japan.,Isotope Imaging Laboratory, Hokkaido University, Sapporo 001-0021, Japan
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2
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Tack P, De Pauw E, Tkalcec B, Lindner M, Bazi B, Vekemans B, Brenker F, Di Michiel M, Uesugi M, Yurimoto H, Nakamura T, Amano K, Matsumoto M, Fujioka Y, Enokido Y, Nakashima D, Noguchi T, Okazaki R, Yabuta H, Naraoka H, Sakamoto K, Tachibana S, Yada T, Nishimura M, Nakato A, Miyazaki A, Yogata K, Abe M, Okada T, Usui T, Yoshikawa M, Saiki T, Tanaka S, Terui F, Nakazawa S, Watanabe SI, Tsuda Y, Vincze L. Rare earth element identification and quantification in millimetre-sized Ryugu rock fragments from the Hayabusa2 space mission. EARTH, PLANETS, AND SPACE : EPS 2022; 74:146. [PMID: 36185784 PMCID: PMC9516535 DOI: 10.1186/s40623-022-01705-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 09/13/2022] [Indexed: 06/16/2023]
Abstract
Millimetre-sized primordial rock fragments originating from asteroid Ryugu were investigated using high energy X-ray fluorescence spectroscopy, providing 2D and 3D elemental distribution and quantitative composition information on the microscopic level. Samples were collected in two phases from two sites on asteroid Ryugu and safely returned to Earth by JAXA's asteroid explorer Hayabusa2, during which time the collected material was stored and maintained free from terrestrial influences, including exposure to Earth's atmosphere. Several grains of interest were identified and further characterised to obtain quantitative information on the rare earth element (REE) content within said grains, following a reference-based and computed-tomography-assisted fundamental parameters quantification approach. Several orders of magnitude REE enrichments compared to the mean CI chondrite composition were found within grains that could be identified as apatite phase. Small enrichment of LREE was found for dolomite grains and slight enrichment or depletion for the general matrices within the Ryugu rock fragments A0055 and C0076, respectively. Graphical Abstract Supplementary Information The online version contains supplementary material available at 10.1186/s40623-022-01705-3.
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Affiliation(s)
- Pieter Tack
- Dept. of Chemistry, XMI, Ghent University, Krijgslaan 281 S12, 9000 Ghent, Belgium
| | - Ella De Pauw
- Dept. of Chemistry, XMI, Ghent University, Krijgslaan 281 S12, 9000 Ghent, Belgium
| | - Beverley Tkalcec
- Dept. of Geoscience, Goethe University, Altenhoeferallee 1, 60438 Frankfurt, Germany
| | - Miles Lindner
- Dept. of Geoscience, Goethe University, Altenhoeferallee 1, 60438 Frankfurt, Germany
| | - Benjamin Bazi
- Dept. of Chemistry, XMI, Ghent University, Krijgslaan 281 S12, 9000 Ghent, Belgium
| | - Bart Vekemans
- Dept. of Chemistry, XMI, Ghent University, Krijgslaan 281 S12, 9000 Ghent, Belgium
| | - Frank Brenker
- Dept. of Geoscience, Goethe University, Altenhoeferallee 1, 60438 Frankfurt, Germany
- IHGP, University of Hawaii, Menoa, HI USA
| | | | | | | | | | - Kana Amano
- Tohoku University, Sendai, 980-8578 Japan
| | - Megumi Matsumoto
- Department of Earth Science, Tohoku University, Aoba-ku, Sendai, 980-8578 Japan
| | - Yuri Fujioka
- Department of Earth Science, Tohoku University, Aoba-ku, Sendai, 980-8578 Japan
| | - Yuma Enokido
- Department of Earth Science, Tohoku University, Aoba-ku, Sendai, 980-8578 Japan
| | - Daisuke Nakashima
- Department of Earth Science, Tohoku University, Aoba-ku, Sendai, 980-8578 Japan
| | | | | | - Hikaru Yabuta
- Hiroshima University, Higashi-Hiroshima, 739-8526 Japan
| | | | | | - Shogo Tachibana
- ISAS/JAXA, Sagamihara, 252-5210 Japan
- The University of Tokyo, Tokyo, 113-0033 Japan
| | - Toru Yada
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, 252-5210 Japan
| | - Masahiro Nishimura
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, 252-5210 Japan
| | - Aiko Nakato
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, 252-5210 Japan
| | - Akiko Miyazaki
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, 252-5210 Japan
| | - Kasumi Yogata
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, 252-5210 Japan
| | - Masanao Abe
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, 252-5210 Japan
| | - Tatsuaki Okada
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, 252-5210 Japan
| | - Tomohiro Usui
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, 252-5210 Japan
| | - Makoto Yoshikawa
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, 252-5210 Japan
| | - Takanao Saiki
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, 252-5210 Japan
| | - Satoshi Tanaka
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, 252-5210 Japan
| | - Fuyuto Terui
- Kanagawa Institute of Technology, Atsugi, 243-0292 Japan
| | - Satoru Nakazawa
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, 252-5210 Japan
| | | | | | - Laszlo Vincze
- Dept. of Chemistry, XMI, Ghent University, Krijgslaan 281 S12, 9000 Ghent, Belgium
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