{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1363670320055087360.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1111/maps.12872"}},{"identifier":{"@type":"URI","@value":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fmaps.12872"}},{"identifier":{"@type":"URI","@value":"https://onlinelibrary.wiley.com/doi/pdf/10.1111/maps.12872"}}],"dc:title":[{"@value":"Type 1 aqueous alteration in <scp>CM</scp> carbonaceous chondrites: Implications for the evolution of water‐rich asteroids"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:title>Abstract</jats:title><jats:p>The <jats:styled-content style=\"fixed-case\">CM</jats:styled-content> carbonaceous chondrite meteorites experienced aqueous alteration in the early solar system. They range from mildly altered type 2 to almost completely hydrated type 1 chondrites, and offer a record of geochemical conditions on water‐rich asteroids. We show that <jats:styled-content style=\"fixed-case\">CM</jats:styled-content>1 chondrites contain abundant (84–91 vol%) phyllosilicate, plus olivine (4–8 vol%), magnetite (2–3 vol%), Fe‐sulfide (<5 vol%), and calcite (<2 vol%). The <jats:styled-content style=\"fixed-case\">CM</jats:styled-content>1/2 chondrites contain phyllosilicate (71–88 vol%), olivine (4–20 vol%), enstatite (2–6 vol%), magnetite (2–3 vol%), Fe‐sulfides (1–2 vol%), and calcite (~1 vol%). As aqueous alteration progressed, the abundance of Mg‐serpentine and magnetite in the <jats:styled-content style=\"fixed-case\">CM</jats:styled-content> chondrites increased. In contrast, calcite abundances in the <jats:styled-content style=\"fixed-case\">CM</jats:styled-content>1/2 and <jats:styled-content style=\"fixed-case\">CM</jats:styled-content>1 chondrites are often depleted relative to the <jats:styled-content style=\"fixed-case\">CM</jats:styled-content>2s. The modal data support the model, whereby metal and Fe‐rich matrix were the first components to be altered on the <jats:styled-content style=\"fixed-case\">CM</jats:styled-content> parent body(ies), before further hydration attacked the coarser Mg‐rich silicates found in chondrules and fragments. Based on the absence of tochilinite, we suggest that <jats:styled-content style=\"fixed-case\">CM</jats:styled-content>1 chondrites experienced increased alteration due to elevated temperatures (>120 °C), although higher water/rock ratios may also have played a role. The modal data provide constraints for interpreting the composition of asteroids and the mineralogy of samples returned from these bodies. We predict that “<jats:styled-content style=\"fixed-case\">CM</jats:styled-content>1‐like” asteroids, as has been proposed for Bennu—target for the <jats:styled-content style=\"fixed-case\">OSIRIS</jats:styled-content>‐<jats:styled-content style=\"fixed-case\">RE</jats:styled-content>x mission—will have a high abundance of Mg‐rich phyllosilicates and Fe‐oxides, but be depleted in calcite.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380286993331758209","@type":"Researcher","foaf:name":[{"@value":"A. J. King"}],"jpcoar:affiliationName":[{"@value":"Department of Earth Sciences Natural History Museum Cromwell Road London SW7 5BD UK"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320055087362","@type":"Researcher","foaf:name":[{"@value":"P. F. Schofield"}],"jpcoar:affiliationName":[{"@value":"Department of Earth Sciences Natural History Museum Cromwell Road London SW7 5BD UK"}]},{"@id":"https://cir.nii.ac.jp/crid/1383670320055087360","@type":"Researcher","foaf:name":[{"@value":"S. S. Russell"}],"jpcoar:affiliationName":[{"@value":"Department of Earth Sciences Natural History Museum Cromwell Road London SW7 5BD UK"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"10869379"},{"@type":"EISSN","@value":"19455100"}],"prism:publicationName":[{"@value":"Meteoritics & Planetary Science"}],"dc:publisher":[{"@value":"Wiley"}],"prism:publicationDate":"2017-04-10","prism:volume":"52","prism:number":"6","prism:startingPage":"1197","prism:endingPage":"1215"},"reviewed":"false","dc:rights":["http://creativecommons.org/licenses/by/4.0/"],"url":[{"@id":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fmaps.12872"},{"@id":"https://onlinelibrary.wiley.com/doi/pdf/10.1111/maps.12872"}],"createdAt":"2017-04-11","modifiedAt":"2023-10-02","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360009142889495808","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"The polymict carbonaceous breccia Aguas Zarcas: A potential analog to samples being returned by the OSIRIS‐REx and Hayabusa2 missions"}]},{"@id":"https://cir.nii.ac.jp/crid/1360021390747998080","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Four‐dimensional‐STEM analysis of the phyllosilicate‐rich matrix of Ryugu samples"}]},{"@id":"https://cir.nii.ac.jp/crid/1360286993331758336","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Evidence for widespread hydrated minerals on asteroid (101955) Bennu"}]},{"@id":"https://cir.nii.ac.jp/crid/1360302866832990336","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Near-mid infrared spectroscopy of carbonaceous chondrites: Insights into spectral variation due to aqueous alteration and thermal metamorphism in asteroids"}]},{"@id":"https://cir.nii.ac.jp/crid/1360306904394954368","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Progressive change in dislocation microstructures in shocked calcite with pressure: Characterization of micrometeoroid bombardment on asteroid Ryugu"}]},{"@id":"https://cir.nii.ac.jp/crid/1360578283288334336","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Shock Recovery With Decaying Compressive Pulses: Shock Effects in Calcite (CaCO<sub>3</sub>) Around the Hugoniot Elastic Limit"}]},{"@id":"https://cir.nii.ac.jp/crid/1360580232378490880","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Heterogeneous nature of the carbonaceous chondrite breccia Aguas Zarcas – Cosmochemical characterization and origin of new carbonaceous chondrite lithologies"}]},{"@id":"https://cir.nii.ac.jp/crid/2050588892101945344","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Aqueous alteration without initial water : possibility of organic-induced hydration of anhydrous silicates in meteorite parent bodies"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1111/maps.12872"},{"@type":"CROSSREF","@value":"10.1111/maps.13620_references_DOI_8M9swIb6i6uTTZxyechFax4fZUO"},{"@type":"CROSSREF","@value":"10.1029/2021je007133_references_DOI_8M9swIb6i6uTTZxyechFax4fZUO"},{"@type":"CROSSREF","@value":"10.1111/maps.14124_references_DOI_8M9swIb6i6uTTZxyechFax4fZUO"},{"@type":"CROSSREF","@value":"10.1038/s41550-019-0722-2_references_DOI_8M9swIb6i6uTTZxyechFax4fZUO"},{"@type":"CROSSREF","@value":"10.1016/j.icarus.2024.115951_references_DOI_8M9swIb6i6uTTZxyechFax4fZUO"},{"@type":"CROSSREF","@value":"10.2138/am-2024-9540_references_DOI_8M9swIb6i6uTTZxyechFax4fZUO"},{"@type":"CROSSREF","@value":"10.1016/j.gca.2022.07.010_references_DOI_8M9swIb6i6uTTZxyechFax4fZUO"},{"@type":"CROSSREF","@value":"10.1186/s40623-020-01352-6_references_DOI_8M9swIb6i6uTTZxyechFax4fZUO"}]}