{"@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/1390282679528678912.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.2343/geochemj.32.267"}},{"identifier":{"@type":"COI","@value":"1:CAS:528:DyaK1cXlslChu7k%3D"}},{"identifier":{"@type":"NDL_BIB_ID","@value":"4771066"}},{"identifier":{"@type":"URI","@value":"http://id.ndl.go.jp/bib/4771066"}},{"identifier":{"@type":"URI","@value":"https://ndlsearch.ndl.go.jp/books/R000000004-I4771066"}},{"identifier":{"@type":"NAID","@value":"130003904609"}},{"identifier":{"@type":"NAID","@value":"10008803025"}}],"dc:title":[{"@language":"en","@value":"Factors controlling the transformation of natural ikaite from Shiowakka, Japan."}],"dc:language":"en","description":[{"type":"abstract","notation":[{"@language":"en","@value":"Ikaite (CaCO<sub>3</sub>·6H<sub>2</sub>O) transforms to calcite, aragonaite and/or vaterite, which are the polymorphs of calcium carbonate, at normal temperature and pressure. The presence of water promotes the transformation of natural ikaite to calcite in a room but the presence of magnesium ion in a solution reduces the transformation rate. The formation of calcium carbonate polymorphs through the transformation is influenced by temperature and magnesium ion concentration in a solution which contacts with ikaite, being analogous to those on the formation of calcium carbonate polymorphs from calcium bicarbonate solution. Rapid transformation of ikaite is favorable to the formation of vaterite, a metastable phase."}],"abstractLicenseFlag":"disallow"}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1410001206016528385","@type":"Researcher","personIdentifier":[{"@type":"NRID","@value":"9000002305079"},{"@type":"NRID","@value":"9000000056119"},{"@type":"NRID","@value":"9000254579376"},{"@type":"NRID","@value":"9000254530167"},{"@type":"NRID","@value":"9000392607806"},{"@type":"NRID","@value":"9000253483741"},{"@type":"NRID","@value":"9000000787186"},{"@type":"NRID","@value":"9000018028815"},{"@type":"RESEARCHMAP","@value":"https://researchmap.jp/read0167305"}],"foaf:name":[{"@language":"en","@value":"Ito Toshihiko"}],"jpcoar:affiliationName":[{"@language":"en","@value":"Laboratory of Earth Science, Hokkaido University of Education at Kushiro"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00167002"},{"@type":"LISSN","@value":"00167002"},{"@type":"EISSN","@value":"18805973"},{"@type":"NDL_BIB_ID","@value":"000000128646"},{"@type":"ISSN","@value":"00167002"},{"@type":"PISSN","@value":"http://id.crossref.org/issn/00167002"},{"@type":"NCID","@value":"AA00654975"}],"prism:publicationName":[{"@language":"en","@value":"GEOCHEMICAL JOURNAL"},{"@language":"ja","@value":"ＧＥＯＣＨＥＭＩＣＡＬ　ＪＯＵＲＮＡＬ"},{"@language":"en","@value":"Geochem. J."},{"@language":"ja","@value":"Ｇｅｏｃｈｅｍ．　Ｊ．"}],"dc:publisher":[{"@language":"en","@value":"GEOCHEMICAL SOCIETY OF JAPAN"},{"@language":"ja","@value":"一般社団法人日本地球化学会"}],"prism:publicationDate":"1998","prism:volume":"32","prism:number":"4","prism:startingPage":"267","prism:endingPage":"273"},"reviewed":"false","url":[{"@id":"http://id.ndl.go.jp/bib/4771066"},{"@id":"https://ndlsearch.ndl.go.jp/books/R000000004-I4771066"}],"availableAt":"1998","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360576120514938880","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@value":"PETROGRAPHY AND GEOCHEMISTRY OF RHOMBIC, CALCITE PSEUDOMORPHS FROM MID‐TERTIARY MUDSTONES OF THE PACIFIC NORTHWEST, U.S.A."}]},{"@id":"https://cir.nii.ac.jp/crid/1390001204122937472","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@language":"en","@value":"A Study of the Polymorphic Formation of Calcium Carbonate in Thermal Springs with an Emphasis on the Effect of Temperature"},{"@value":"Geochemistry of calcareous deposits found in hot springs"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001206234003200","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Ikaite from cold spring water at Shiowakka, Hokkaido, Japan."},{"@language":"ja","@value":"北海道，シオワッカ冷泉産のikaite"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282681212191104","@type":"Article","relationType":["isReferencedBy","isCitedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Vaterite after ikaite in carbonate sediment."},{"@language":"ja","@value":"炭酸カルシウム堆積物中に産するイカアイト後のファテライト"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282681522120704","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Structural change induced by dehydration in ikaite (CaCO<sub>3</sub>·6H<sub>2</sub>O)"},{"@value":"Structural change induced by dehydration in ikaite (CaCO3·6H2O)"}]},{"@id":"https://cir.nii.ac.jp/crid/1520573330596056960","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@value":"北海道足寄町,シオワッカの冷泉石灰華に産するmonohy drocalcite(CaCO3・H2O)の産状"},{"@language":"ja-Kana","@value":"ホッカイドウ アショロチョウ シオワッカ ノ レイゼイ セッカイカ ニ サンス"}]},{"@id":"https://cir.nii.ac.jp/crid/1570009749777463936","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Change in calcium carbonate polymorphs by grinding"}]},{"@id":"https://cir.nii.ac.jp/crid/1570009751764540160","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Ikaite precipitation by mixing of shoreline springs and lake water, Mono Lake, California, USA"}]},{"@id":"https://cir.nii.ac.jp/crid/1570291224754175616","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@language":"en","@value":"\"Ikaite\" a new mineral from 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