{"@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/1362825895181949568.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1126/science.1062342"}},{"identifier":{"@type":"URI","@value":"https://www.science.org/doi/pdf/10.1126/science.1062342"}}],"dc:title":[{"@value":"An Ultradense Polymorph of Rutile with Seven-Coordinated Titanium from the Ries Crater"}],"description":[{"type":"abstract","notation":[{"@value":"<jats:p>We report the discovery of an ultradense post-rutile polymorph of titanium dioxide in shocked gneisses of the Ries crater in Germany. The microscopic diagnostic feature is intense blue internal reflections in crossed polarizers in reflected light. X-ray diffraction studies revealed a monoclinic lattice, isostructural with the baddeleyite ZrO<jats:sub>2</jats:sub>polymorph, and the titanium cation is coordinated with seven oxygen anions. The cell parameters are as follows:<jats:italic>a</jats:italic>= 4.606(2) angstroms,<jats:italic>b</jats:italic>= 4.986(3) angstroms,<jats:italic>c</jats:italic>= 4.933(3) angstroms, β (angle between<jats:italic>c</jats:italic>and<jats:italic>a</jats:italic>axes) = 99.17(6)°; space group<jats:italic>P2</jats:italic><jats:sub>1</jats:sub><jats:italic>/c</jats:italic>; density = 4.72 grams per cubic centimeter, where the numbers in parentheses are standard deviations in the last significant digits. This phase is 11% denser than rutile. The mineral is sensitive to x-ray irradiation and tends to invert to rutile. The presence of baddeleyite-type TiO<jats:sub>2</jats:sub>in the shocked rocks indicates that the peak shock pressure was between 16 and 20 gigapascals, and the post-shock temperature was much lower than 500°C.</jats:p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1382825895181949568","@type":"Researcher","foaf:name":[{"@value":"Ahmed El Goresy"}],"jpcoar:affiliationName":[{"@value":"Max-Planck-Institut für Chemie, J. Joachim-Becher-Weg 27, 55128 Mainz, Germany.2Guangzhou Institute of Geochemistry, Chinese Academy of Science, Guangzhou, 510640, China.3Theoretical Geochemistry Program, Institute of Earth Sciences, Uppsala University, 75236 Uppsala, Sweden.4Laboratoire de Sciences de la Terre, Ecole Normale Supérieur de Lyon, 69364 Lyon, France."}]},{"@id":"https://cir.nii.ac.jp/crid/1382825895181949696","@type":"Researcher","foaf:name":[{"@value":"Ming Chen"}],"jpcoar:affiliationName":[{"@value":"Max-Planck-Institut für Chemie, J. Joachim-Becher-Weg 27, 55128 Mainz, Germany.2Guangzhou Institute of Geochemistry, Chinese Academy of Science, Guangzhou, 510640, China.3Theoretical Geochemistry Program, Institute of Earth Sciences, Uppsala University, 75236 Uppsala, Sweden.4Laboratoire de Sciences de la Terre, Ecole Normale Supérieur de Lyon, 69364 Lyon, France."}]},{"@id":"https://cir.nii.ac.jp/crid/1382825895181949569","@type":"Researcher","foaf:name":[{"@value":"Leonid Dubrovinsky"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825895181949571","@type":"Researcher","foaf:name":[{"@value":"Philippe Gillet"}]},{"@id":"https://cir.nii.ac.jp/crid/1382825895181949570","@type":"Researcher","foaf:name":[{"@value":"Günther Graup"}],"jpcoar:affiliationName":[{"@value":"Max-Planck-Institut für Chemie, J. Joachim-Becher-Weg 27, 55128 Mainz, Germany.2Guangzhou Institute of Geochemistry, Chinese Academy of Science, Guangzhou, 510640, China.3Theoretical Geochemistry Program, Institute of Earth Sciences, Uppsala University, 75236 Uppsala, Sweden.4Laboratoire de Sciences de la Terre, Ecole Normale Supérieur de Lyon, 69364 Lyon, France."}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"00368075"},{"@type":"EISSN","@value":"10959203"}],"prism:publicationName":[{"@value":"Science"}],"dc:publisher":[{"@value":"American Association for the Advancement of Science (AAAS)"}],"prism:publicationDate":"2001-08-24","prism:volume":"293","prism:number":"5534","prism:startingPage":"1467","prism:endingPage":"1470"},"reviewed":"false","url":[{"@id":"https://www.science.org/doi/pdf/10.1126/science.1062342"}],"createdAt":"2002-07-27","modifiedAt":"2024-12-08","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360004233526651776","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Quenching ilmenite with a high-temperature and high-pressure phase using super-high-energy ball milling"}]},{"@id":"https://cir.nii.ac.jp/crid/1360285706175298048","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"High-pressure phase relations in the system TiO2–ZrO2 to 12 GPa: stability of αPbO2-type srilankite solid solutions of (Ti1−x , Zr x )O2 (0 ≤ x ≤ 0.6)"}]},{"@id":"https://cir.nii.ac.jp/crid/1360567181152187520","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"High-pressure high-temperature phase relations in FeTiO3 up to 35 GPa and 1600 °C"}]},{"@id":"https://cir.nii.ac.jp/crid/1360846643276521472","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"High‐pressure minerals in shocked meteorites"}]},{"@id":"https://cir.nii.ac.jp/crid/1363664919016701056","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"High-Pressure and High-Temperature Phase Transitions in Fe2TiO4 and Mg2TiO4 with Implications for Titanomagnetite Inclusions in Superdeep Diamonds"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001206265213568","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Laser Ablation Condensation and Transformation of Baddeleyite-Type Related TiO2"},{"@value":"Laser Ablation Condensation and Transformation of Baddeleyite-Type Related TiO<sub>2</sub>"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282681502662784","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"High-pressure minerals in the Earth and planetary materials"},{"@language":"ja","@value":"地球惑星物質中の高圧鉱物"},{"@language":"ja-Kana","@value":"チキュウ ワクセイ ブッシツ チュウ ノ コウアツ コウブツ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390865209606162560","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Inorganic Materials Discovery at High Pressures using Super-High-Energy Ball Milling"},{"@language":"ja","@value":"超高速遊星ボールミルを用いた衝突プロセスによる高圧無機物質・材料創製"}]},{"@id":"https://cir.nii.ac.jp/crid/2050025942153536512","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Natural and experimental high-pressure, shock-produced terrestrial and extraterrestrial materials"}]},{"@id":"https://cir.nii.ac.jp/crid/2050588892104880128","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Can quasicrystals survive in planetary collisions?"}]}],"dataSourceIdentifier":[{"@type":"CROSSREF","@value":"10.1126/science.1062342"},{"@type":"CROSSREF","@value":"10.1038/srep04700_references_DOI_WLWDO6GWOWuwb2Sd8LduOfpK2vJ"},{"@type":"CROSSREF","@value":"10.4131/jshpreview.34.73_references_DOI_WLWDO6GWOWuwb2Sd8LduOfpK2vJ"},{"@type":"CROSSREF","@value":"10.1007/s00269-012-0534-8_references_DOI_WLWDO6GWOWuwb2Sd8LduOfpK2vJ"},{"@type":"CROSSREF","@value":"10.1186/s40645-021-00421-y_references_DOI_WLWDO6GWOWuwb2Sd8LduOfpK2vJ"},{"@type":"CROSSREF","@value":"10.1007/s00269-016-0836-3_references_DOI_WLWDO6GWOWuwb2Sd8LduOfpK2vJ"},{"@type":"CROSSREF","@value":"10.2465/gkk.111226_references_DOI_WLWDO6GWOWuwb2Sd8LduOfpK2vJ"},{"@type":"CROSSREF","@value":"10.1111/maps.12902_references_DOI_WLWDO6GWOWuwb2Sd8LduOfpK2vJ"},{"@type":"CROSSREF","@value":"10.1186/s40645-021-00451-6_references_DOI_WLWDO6GWOWuwb2Sd8LduOfpK2vJ"},{"@type":"CROSSREF","@value":"10.1143/jjap.43.1519_references_DOI_WLWDO6GWOWuwb2Sd8LduOfpK2vJ"},{"@type":"CROSSREF","@value":"10.3390/min9100614_references_DOI_WLWDO6GWOWuwb2Sd8LduOfpK2vJ"}]}