翻訳と辞書 Words near each other ・ Melanonaclia toulgoeti ・ Melanonus ・ Melanonychia ・ Melanopais gemmaria ・ Melanopella ・ Melanopelta ・ Melanopeziza ・ Melanophagi ・ Melanophidium ・ Melanophidium bilineatum ・ Melanophidium punctatum ・ Melanophidium wynaudense ・ Melanophila ・ Melanophilin ・ Melanophloea ・ Melanophlogite ・ Melanophryne ・ Melanophryne barbatula ・ Melanophryne carpish ・ Melanophryniscus ・ Melanophryniscus admirabilis ・ Melanophryniscus atroluteus ・ Melanophryniscus cambaraensis ・ Melanophryniscus cupreuscapularis ・ Melanophryniscus devincenzii ・ Melanophryniscus dorsalis ・ Melanophryniscus fulvoguttatus ・ Melanophryniscus klappenbachi ・ Melanophryniscus krauczuki ・ Melanophryniscus macrogranulosus Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Melanophlogite ： ウィキペディア英語版 Melanophlogite Melanophlogite (MEP) is a rare silicate mineral and a polymorph of silica (SiO2). It has a zeolite-like porous structure which results in relatively low and not well-defined values of its density and refractive index. Melanophlogite often overgrows crystals of sulfur or calcite and typically contains a few percent of organic and sulfur compounds. Darkening of organics in melanophlogite upon heating is a possible origin of its name, which comes from the Greek for "black" and "to be burned".〔〔 ==History== Melanophlogite was identified and named by Arnold von Lasaulx in 1876 although G. Alessi had described a very similar mineral as early as in 1827. The mineral had a cubic crystal structure; chemical analysis revealed that it is mainly composed of SiO2, but also contains up to 12% of carbon and sulfur. It was suggested that the decomposition of organic matter (carbon) in the mineral was responsible for its blackening upon heating. All studied samples originated from Sicily, and thus the mineral was called Girghenti, an old name for Agrigento town in Sicily. The name was officially changed to melanophlogite in 1927.〔 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「Melanophlogite」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.