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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 schoepite ： ウィキペディア英語版 schoepite Schoepite, empirical formula (UO2)8O2(OH)12•12(H2O)〔 is a rare alteration product of uraninite in hydrothermal uranium deposits. It may also form directly from ianthinite. The mineral presents as a transparent to translucent yellow, lemon yellow, brownish yellow, or amber orthorhombic tabular crystals. Although over 20 other crystal forms have been noted; rarely in microcrystalline aggregates. When exposed to air schoepite converts over a short time to the metaschoepite form (UO3 • nH2O, n < 2) within a few months of being exposed to ambient air. The hardness is 2.5, density is 4.8 g/cm3, and it streaks yellow. It was first described from specimens from Shinkolobwe mine in Zaïre in 1923,〔 several additional localities are known. Schoepite was named to honor Alfred Schoep (1881–1966), Professor of Mineralogy at the University of Ghent, Belgium.〔 ==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「schoepite」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.