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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Jonesite ： ウィキペディア英語版 Jonesite Jonesite is a mineral with the chemical formula Ba4(K,Na)2() *6H2O.〔American Geological Institute. (2010) Jonesite. Retrieved 11 September 2010, from 〕 This mineral is named after Francis Tucker Jones (1905–1993), who discovered the mineral while working as a Research Chemical Microscopist at Berkeley in CA.〔Barthelmy, D. (2010) Jonesite Mineral Data. Mineralogy Database. Retrieved 11 September 2010, from .〕 Jonesite has diffraction symmetry of mmm, which implies an orthorhombic system with all three axes perpendicular to each other and the angles between each axis equal to 90 degrees.〔Wise, W., and Pabst, A. (1977) Jonesite: A New Mineral from the Benitoite Gem Mine, San Benito County, California. Mineralogical Record, 8, 453-456.〕 In addition to symmetrical properties, Jonesite is a biaxial mineral with birefringence, which is a term to describe the difference between index of refraction.〔Barthelmy, D. (2010) Jonesite Mineral Data. Mineralogy Database. Retrieved 11 September 2010, from .〕 Jonesite is anisotropic, meaning the speed of light changes through the mineral, so the mineral shows color when viewed in crossed polarized light under a microscope. The mineral also has medium relief, which is a measure of how well the mineral stands out when viewed under a microscope in plane polarized light.〔Wise, W., and Pabst, A. (2010) Jonesite. Mineralogical Record. Retrieved 23 September 2010, from .〕 In addition to being one of the rarest minerals in the Benitoite Gem mine located in California, Jonesite also is the first titanosilicate mineral with a porous double-layered crystal structure.〔Krivovichev, S., and Armbruster, T. (2004) The Crystal Structure of Jonesite: A First Example of Titanosilicate with Porous Double Layers. American Mineralogist, 89, 314-318.〕 This discovery is important because titanosilicate frameworks have industrial uses in energy companies and are used in containing radioactive waste.〔Krivovichev, S., and Armbruster, T. (2004) The Crystal Structure of Jonesite: A First Example of Titanosilicate with Porous Double Layers. American Mineralogist, 89, 314-318.〕 ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Jonesite」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.