{"@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/1390282679528510464.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.2343/geochemj.27.337"}},{"identifier":{"@type":"URI","@value":"http://www.jstage.jst.go.jp/article/geochemj1966/27/4-5/27_4-5_337/_pdf"}},{"identifier":{"@type":"NAID","@value":"130003904498"}}],"dc:title":[{"@language":"en","@value":"Scanning electron microscope observations of sublimates from Merapi Valcano, Indnesia."}],"dc:language":"en","description":[{"type":"abstract","notation":[{"@language":"en","@value":"Sublimates were sampled from high-temperature (up to 800°C) fumaroles at Merapi volcano, Indonesia in January 1984. Sampling is accomplished by inserting silica tubes into high-temperature vents. Volcanic gas flows through the tubes and sublimates precipitate on the inner walls in response to the temperature gradient. With decreasing temperature (800–500°C) in the tubes, there are five sublimate zones: 1) cristobalite, magnetite, and halite; 2) halite, sylvite, K-Ca sulfate (K<sub>2</sub>Ca[SO<sub>4</sub>]<sub>2</sub>), acmite, wollastonite, and pyrite; 3) halite, sylvite, galena, Pb-Bi sulfide, aphthitalite, sphalerite, and Cs-K sulfate; 4) halite, sylvite, galena, PbKCl<sub>3</sub>, aphthitalite, and Na-K-Fe sulfate ([Na, K]<sub>2</sub>Fe[SO<sub>4</sub>]Cl<sub>2</sub>); and 5) halite, sylvite, galena, PbKCl<sub>3</sub>, and various sulfates of Pb, Cu, and Zn. Texturally, the sublimate phases grade from large, well-formed crystals at their highest-temperature occurrence to more numerous, smaller crystals that are less perfect at lower temperatures. These changes imply that the crystal nucleation and growth rates increase and decrease, respectively, as temperature decreases. Several of the sublimate phases also exhibit highly anisotropic morphologies (whiskers, platelets, spheres), especially below their highest temperature of deposition. Overall, the textural data suggest that the gas is saturated or slightly supersaturated with the phases at their hottest occurrence, but that the gas becomes increasingly supersaturated with the phases at lower temperatures. The anisotropic morphologies probably form because the crystals grow toward more supersaturated conditions in the center of the tube. The gas fails to maintain equilibrium with the precipitating sublimates because the high velocity of the carrier gas prevents complete mass transfer from the gas stream to the tube walls."}],"abstractLicenseFlag":"disallow"}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1410282679528510464","@type":"Researcher","personIdentifier":[{"@type":"NRID","@value":"9000254579050"}],"foaf:name":[{"@language":"en","@value":"Symonds Robert"}],"jpcoar:affiliationName":[{"@language":"en","@value":"U.S. Geological Survey Cascades Volcano Observatory"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00167002"},{"@type":"LISSN","@value":"00167002"},{"@type":"EISSN","@value":"18805973"}],"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":"1993","prism:volume":"27","prism:number":"4/5","prism:startingPage":"337","prism:endingPage":"350"},"reviewed":"false","url":[{"@id":"http://www.jstage.jst.go.jp/article/geochemj1966/27/4-5/27_4-5_337/_pdf"}],"availableAt":"1993","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050282813184395136","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Salt shell fallout during the ash eruption at the Nakadake crater, Aso volcano, Japan: evidence of an undergrounds hydrothermal system surrounding the erupting vent"},{"@value":"Salt shell fallout during the ash eruption at the Nakadake crater, Aso volcano, Japan : evidence of an underground hydrothermal system surrounding the erupting vent"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282681522446848","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Crystal chemistry of ZnS minerals formed as high-temperature volcanic sublimates: matraite identical with sphalerite"}]}],"dataSourceIdentifier":[{"@type":"JALC","@value":"oai:japanlinkcenter.org:0002499283"},{"@type":"CROSSREF","@value":"10.2343/geochemj.27.337"},{"@type":"CIA","@value":"130003904498"},{"@type":"CROSSREF","@value":"10.1186/s40623-018-0798-4_references_DOI_FlRVF0Tzl0AwhwxdpFvdTipll0v"},{"@type":"CROSSREF","@value":"10.2465/jmps.071022f_references_DOI_FlRVF0Tzl0AwhwxdpFvdTipll0v"}]}