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dc.contributor.authorMouloud, Bahae-eddineen
dc.contributor.authorJacob, Damienen
dc.contributor.authorde la Peña, Franciscoen
dc.contributor.authorMarinova, Mayaen
dc.contributor.authorLe Guillou, Corentinen
dc.contributor.authorViennet, Jean-Christopheen
dc.contributor.authorLaforet, Sylvainen
dc.contributor.authorLeroux, Huguesen
dc.contributor.authorTeurtrie, Adrienen
dc.contributor.authorNoguchi, Takaakien
dc.contributor.authorMatsumoto, Toruen
dc.contributor.authorMiyake, Akiraen
dc.contributor.authorIgami, Yoheien
dc.contributor.authorHaruta, Mitsutakaen
dc.contributor.authorSaito, Hikaruen
dc.contributor.authorHata, Satoshien
dc.contributor.authorSeto, Yusukeen
dc.contributor.authorMiyahara, Masaakien
dc.contributor.authorTomioka, Naotakaen
dc.contributor.authorIshii, Hope A.en
dc.contributor.authorBradley, John P.en
dc.contributor.authorOhtaki, Kenta K.en
dc.contributor.authorDobrica, Elenaen
dc.contributor.authorLangenhorst, Falkoen
dc.contributor.authorHarries, Dennisen
dc.contributor.authorBeck, Pierreen
dc.contributor.authorPhan, Thi H. V.en
dc.contributor.authorRebois, Rolandoen
dc.contributor.authorAbreu, Neyda M.en
dc.contributor.authorGray, Jenniferen
dc.contributor.authorZega, Thomasen
dc.contributor.authorZanetta, Pierre-M.en
dc.contributor.authorThompson, Michelle S.en
dc.contributor.authorStroud, Rhondaen
dc.contributor.authorBurgess, Kateen
dc.contributor.authorCymes, Brittany A.en
dc.contributor.authorBridges, John C.en
dc.contributor.authorHicks, Leonen
dc.contributor.authorLee, Martin R.en
dc.contributor.authorDaly, Lukeen
dc.contributor.authorBland, Phil A.en
dc.contributor.authorZolensky, Michael E.en
dc.contributor.authorFrank, David R.en
dc.contributor.authorMartinez, Jamesen
dc.contributor.authorTsuchiyama, Akiraen
dc.contributor.authorYasutake, Masahiroen
dc.contributor.authorMatsuno, Junyaen
dc.contributor.authorOkumura, Shotaen
dc.contributor.authorMitsukawa, Itaruen
dc.contributor.authorUesugi, Kentaroen
dc.contributor.authorUesugi, Masayukien
dc.contributor.authorTakeuchi, Akihisaen
dc.contributor.authorSun, Mingqien
dc.contributor.authorEnju, Satomien
dc.contributor.authorTakigawa, Akien
dc.contributor.authorMichikami, Tatsuhiroen
dc.contributor.authorNakamura, Tomokien
dc.contributor.authorMatsumoto, Megumien
dc.contributor.authorNakauchi, Yusukeen
dc.contributor.authorAbe, Masanaoen
dc.contributor.authorNakazawa, Satoruen
dc.contributor.authorOkada, Tatsuakien
dc.contributor.authorSaiki, Takanaoen
dc.contributor.authorTanaka, Satoshien
dc.contributor.authorTerui, Fuyutoen
dc.contributor.authorYoshikawa, Makotoen
dc.contributor.authorMiyazaki, Akikoen
dc.contributor.authorNakato, Aikoen
dc.contributor.authorNishimura, Masahiroen
dc.contributor.authorUsui, Tomohiroen
dc.contributor.authorYada, Toruen
dc.contributor.authorYurimoto, Hisayoshien
dc.contributor.authorNagashima, Kazuhideen
dc.contributor.authorKawasaki, Noriyukien
dc.contributor.authorSakamotoa, Naoyaen
dc.contributor.authorOkazaki, Ryujien
dc.contributor.authorYabuta, Hikaruen
dc.contributor.authorNaraoka, Hiroshien
dc.contributor.authorSakamoto, Kanakoen
dc.contributor.authorTachibana, Shogoen
dc.contributor.authorWatanabe, Sei-ichiroen
dc.contributor.authorTsuda, Yuichien
dc.contributor.alternative野口, 高明ja
dc.contributor.alternative松本, 徹ja
dc.contributor.alternative三宅, 亮ja
dc.contributor.alternative伊神, 洋平ja
dc.contributor.alternative治田, 充貴ja
dc.date.accessioned2025-04-18T00:28:41Z-
dc.date.available2025-04-18T00:28:41Z-
dc.date.issued2024-08-
dc.identifier.urihttp://hdl.handle.net/2433/293425-
dc.description.abstractRyugu 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.en
dc.language.isoeng-
dc.publisherWileyen
dc.rights© 2024 The Authors. Meteoritics & Planetary Science published by Wiley Periodicals LLC on behalf of The Meteoritical Society.en
dc.rightsThis is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.en
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/-
dc.titleFour-dimensional-STEM analysis of the phyllosilicate-rich matrix of Ryugu samplesen
dc.typejournal article-
dc.type.niitypeJournal Article-
dc.identifier.jtitleMeteoritics & Planetary Scienceen
dc.identifier.volume59-
dc.identifier.issue8-
dc.identifier.spage2002-
dc.identifier.epage2022-
dc.relation.doi10.1111/maps.14124-
dc.textversionpublisher-
dc.relation.urlhttps://onlinelibrary.wiley.com/doi/pdf/10.1111/maps.14124-
dcterms.accessRightsopen access-
dc.identifier.pissn1086-9379-
dc.identifier.eissn1945-5100-
出現コレクション:学術雑誌掲載論文等

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