{"@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/1390001206216632576.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.2465/ganko1941.69.381"}},{"identifier":{"@type":"NAID","@value":"130003884226"}}],"dc:title":[{"@value":"白雲母無水物の結晶構造"},{"@language":"en","@value":"THE CRYSTAL STRUCTURE OF MUSCOVITE DEHYDROXYLATE"}],"dc:language":"ja","description":[{"type":"abstract","notation":[{"@language":"en","@value":"The crystal structure of muscovite dehydroxylate has been determined by X-ray single crystal analysis. The muscovite dehydroxylate was prepared by heating 2M<sub>1</sub> muscovite at 900°C for 30 minutes. The dehydroxylate has the cell dimensions, <i>a</i>=5.244±0.008, <i>b</i>=9.202± 0.016, <i>c</i>=20.233±0.021 (Å), <i>β </i>=95°50′±06′; and the space group C2/c. Integrating Weissenberg photographs were taken using the multiple-film technique and intensities of 415 reflections were measured mainly by microphotometer. An examination was made by three dimensional Fourier methods of three possible models for the structure of the dehydroxylate. The result revealed that one of them was successfully refined to R=14.2% by full-matrix least-squares calculations. The R value of the final structure is considered to be low enough since the dehydroxylate gave diffused and streaked reflections caused by the structural disorders. In the structure, Al atoms are coordinated by five oxygen atoms. The change in coordination from six to five gives rise to a very short distance of dehydroxylate 1.69Å between Al and the oxygen atom which is coordinated to two Al atoms. The form of the five-fold coordination groups mentioned above is approximately a trigonal bipyramid and is quite similar to that found in pyrophyllite dehydroxylate proposed by Wardle and Brindley (1972).<br> Reaction mechanism of the dehydroxylation of muscovite was discussed in connection with the crystal structure of muscovite and its dehydroxylate."}],"abstractLicenseFlag":"disallow"}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1410572171571856513","@type":"Researcher","personIdentifier":[{"@type":"NRID","@value":"9000254529075"}],"foaf:name":[{"@language":"en","@value":"Hasu Hideki"},{"@language":"ja","@value":"蓮 秀樹"}],"jpcoar:affiliationName":[{"@language":"ja","@value":"東京工業大学工学部無機材料工学科"}]},{"@id":"https://cir.nii.ac.jp/crid/1410572171571856512","@type":"Researcher","personIdentifier":[{"@type":"NRID","@value":"9000254529073"}],"foaf:name":[{"@language":"en","@value":"Udagawa Shigekazu"},{"@language":"ja","@value":"宇田川 重和"}],"jpcoar:affiliationName":[{"@language":"ja","@value":"東京工業大学工学部無機材料工学科"}]},{"@id":"https://cir.nii.ac.jp/crid/1410572171571856514","@type":"Researcher","personIdentifier":[{"@type":"NRID","@value":"9000254529074"}],"foaf:name":[{"@language":"en","@value":"Urabe Kazuyori"},{"@language":"ja","@value":"浦部 和順"}],"jpcoar:affiliationName":[{"@language":"ja","@value":"東京工業大学工学部無機材料工学科"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00214825"},{"@type":"EISSN","@value":"18830765"},{"@type":"PISSN","@value":"http://id.crossref.org/issn/03610128"}],"prism:publicationName":[{"@language":"en","@value":"The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists"},{"@language":"ja","@value":"岩石鉱物鉱床学会誌"},{"@language":"en","@value":"J. Japan. Assoc. Min. Petr. Econ. Geol."},{"@language":"ja","@value":"岩鉱"}],"dc:publisher":[{"@language":"en","@value":"Japan Association of Mineralogical Sciences"},{"@language":"ja","@value":"一般社団法人　日本鉱物科学会"}],"prism:publicationDate":"1974","prism:volume":"69","prism:number":"11","prism:startingPage":"381","prism:endingPage":"389"},"reviewed":"false","availableAt":"1974","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1390001206545975680","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Rehydration properties of Na-rectorite from Makurazaki, kagoshima Prefecture, Japan."}]}],"dataSourceIdentifier":[{"@type":"JALC","@value":"oai:japanlinkcenter.org:0034514375"},{"@type":"CROSSREF","@value":"10.2465/ganko1941.69.381"},{"@type":"CIA","@value":"130003884226"},{"@type":"CROSSREF","@value":"10.2465/minerj.14.351_references_DOI_6WovJBdgOZX3tFaalY81YKaTeze"}]}