Trace-element analysis of mineral grains in Ryugu rock fragment sections by synchrotron-based confocal X-ray fluorescence
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Published:2022-11-04
Issue:1
Volume:74
Page:
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ISSN:1880-5981
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Container-title:Earth, Planets and Space
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language:en
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Short-container-title:Earth Planets Space
Author:
Bazi BenjaminORCID, Tack Pieter, Lindner Miles, Vekemans Bart, De Pauw Ella, Tkalcec Beverley, Brenker Frank E., Garrevoet Jan, Falkenberg Gerald, Yabuta Hikaru, Yurimoto Hisayoshi, Nakamura Tomoki, Amano Kana, Matsumoto Megumi, Fujioka Yuri, Enokido Yuma, Nakashima Daisuke, Uesugi Masayuki, Naraoka Hiroshi, Noguchi Takaaki, Okazaki Ryuji, Sakamoto Kanako, Yada Toru, Nishimura Masahiro, Nakato Aiko, Miyazaki Akiko, Yogata Kasumi, Abe Masanao, Okada Tatsuaki, Usui Tomohiro, Yoshikawa Makoto, Saiki Takanao, Tanaka Satoshi, Terui Fuyuto, Nakazawa Satoru, Tachibana Shogo, Watanabe Sei-ichiro, Tsuda Yuichi, Vincze Laszlo
Abstract
AbstractA fundamental parameter-based quantification scheme for confocal XRF was applied to sub-micron synchrotron radiation X-ray fluorescence (SR-XRF) data obtained at the beamline P06 of the Deutsches Elektronen-Synchrotron (DESY, Hamburg, Germany) from two sections C0033-01 and C0033-04 that were wet cut from rock fragment C0033 collected from Cb-type asteroid (162173) Ryugu by JAXA’s Hayabusa2 mission. Trace-element quantifications show that C0033 bulk matrix is CI-like, whereas individual mineral grains (i.e., magnetite, pyrrhotite, dolomite, apatite and breunnerite) show, depending on the respective phase, minor to strong deviations. The non-destructive nature of SR-XRF coupled with a new PyMca (a Python toolkit for XRF data analysis)-based quantification approach, performed in parallel with the synchrotron experiments, proves to be an attractive tool for the initial analysis of samples from return missions, such as Hayabusa2 and OSIRIS-REx, the latter returning material from a B-type asteroid (101955) Bennu in 2023.
Graphical Abstract
Funder
FWO IRI FWO UGent GOA DFG
Publisher
Springer Science and Business Media LLC
Subject
Space and Planetary Science,Geology
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