Earth, Planets and Space (Sep 2022)
Rare earth element identification and quantification in millimetre-sized Ryugu rock fragments from the Hayabusa2 space mission
- Pieter Tack,
- Ella De Pauw,
- Beverley Tkalcec,
- Miles Lindner,
- Benjamin Bazi,
- Bart Vekemans,
- Frank Brenker,
- Marco Di Michiel,
- Masayuki Uesugi,
- Hisayoshi Yurimoto,
- Tomoki Nakamura,
- Kana Amano,
- Megumi Matsumoto,
- Yuri Fujioka,
- Yuma Enokido,
- Daisuke Nakashima,
- Takaaki Noguchi,
- Ryuji Okazaki,
- Hikaru Yabuta,
- Hiroshi Naraoka,
- Kanako Sakamoto,
- Shogo Tachibana,
- Toru Yada,
- Masahiro Nishimura,
- Aiko Nakato,
- Akiko Miyazaki,
- Kasumi Yogata,
- Masanao Abe,
- Tatsuaki Okada,
- Tomohiro Usui,
- Makoto Yoshikawa,
- Takanao Saiki,
- Satoshi Tanaka,
- Fuyuto Terui,
- Satoru Nakazawa,
- Sei-Ichiro Watanabe,
- Yuichi Tsuda,
- Laszlo Vincze
Affiliations
- Pieter Tack
- Dept. of Chemistry, XMI, Ghent University
- Ella De Pauw
- Dept. of Chemistry, XMI, Ghent University
- Beverley Tkalcec
- Dept. of Geoscience, Goethe University
- Miles Lindner
- Dept. of Geoscience, Goethe University
- Benjamin Bazi
- Dept. of Chemistry, XMI, Ghent University
- Bart Vekemans
- Dept. of Chemistry, XMI, Ghent University
- Frank Brenker
- Dept. of Geoscience, Goethe University
- Marco Di Michiel
- The European Synchrotron, ESRF
- Masayuki Uesugi
- JASRI/SPring-8
- Hisayoshi Yurimoto
- Hokkaido University
- Tomoki Nakamura
- Tohoku University
- Kana Amano
- Tohoku University
- Megumi Matsumoto
- Department of Earth Science, Tohoku University
- Yuri Fujioka
- Department of Earth Science, Tohoku University
- Yuma Enokido
- Department of Earth Science, Tohoku University
- Daisuke Nakashima
- Department of Earth Science, Tohoku University
- Takaaki Noguchi
- Kyoto University
- Ryuji Okazaki
- Kyushu University
- Hikaru Yabuta
- Hiroshima University
- Hiroshi Naraoka
- Kyushu University
- Kanako Sakamoto
- ISAS/JAXA
- Shogo Tachibana
- ISAS/JAXA
- Toru Yada
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA)
- Masahiro Nishimura
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA)
- Aiko Nakato
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA)
- Akiko Miyazaki
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA)
- Kasumi Yogata
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA)
- Masanao Abe
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA)
- Tatsuaki Okada
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA)
- Tomohiro Usui
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA)
- Makoto Yoshikawa
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA)
- Takanao Saiki
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA)
- Satoshi Tanaka
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA)
- Fuyuto Terui
- Kanagawa Institute of Technology
- Satoru Nakazawa
- Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA)
- Sei-Ichiro Watanabe
- Nagoya University
- Yuichi Tsuda
- ISAS/JAXA
- Laszlo Vincze
- Dept. of Chemistry, XMI, Ghent University
- DOI
- https://doi.org/10.1186/s40623-022-01705-3
- Journal volume & issue
-
Vol. 74,
no. 1
pp. 1 – 12
Abstract
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
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