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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 Benstonite ： ウィキペディア英語版 Benstonite Benstonite is a mineral with formula Ba6Ca6Mg(CO3)13.〔 Discovered in 1954, the mineral was described in 1961 and named after Orlando J. Benston (1901–1966). ==Description and occurrence== Benstonite is translucent and white, pale yellow, or pale yellow-brown in color.〔 The mineral occurs as cleavable masses; cleavage fragments are nearly perfectly rhombohedral in shape. Cleavage faces are up to across and slightly curved. On large specimens, the faces exhibit a mosaic structure similar to that in some specimens of dolomite and siderite. Benstonite fluoresces red or yellow under x-rays and longwave and shortwave ultraviolet. The mineral also exhibits strong red phosphorescence.〔 Benstonite is known to occur in Canada, China, India, Italy, Namibia, Russia, Sweden, and the United States.〔 It occurs in association with alstonite, barite, barytocalcite, calcite, daqingshanite, fluorite, huntite, monazite, phlogopite, pyrite, sphalerite, strontianite, and quartz.〔 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「Benstonite」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.