翻訳と辞書 Words near each other ・ Osmia lignaria ・ Osmia ribifloris ・ Osmia rufa ・ Osmia xanthomelana ・ Osmic Hill ・ Osmidus ・ Osmin purple basil ・ Osmington ・ Osmington Mills ・ Osmington Oolite ・ Osmington White Horse ・ Osminia ・ Osminia fenusaeformis ・ Osminia namibiana ・ Osmiopsis ・ Osmiridium ・ Osmiro Silva ・ Osmitopsis ・ Osmium ・ Osmium (album) ・ Osmium (disambiguation) ・ Osmium borides ・ Osmium dioxide ・ Osmium hexafluoride ・ Osmium oxide ・ Osmium tetroxide ・ Osmium(IV) chloride ・ Osmo ・ Osmo Antero Wiio ・ Osmo Buller 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 Osmiridium ： ウィキペディア英語版 Osmiridium Osmiridium, also known as iridosmium or iridosmine, is a natural alloy of osmium and iridium, with traces of other platinum group metals. Osmiridium has been defined as containing a higher proportion of osmium, while iridosmine contains more iridium. However, as the content of the natural Os-Ir alloys varies considerably, the constituent percentages of specimens often reflects the reverse situation of osmiridium describing specimens containing a higher proportion of osmium and iridosmine containing more iridium. In 1963, Max Hutchinson Hey proposed using iridosmine for hexagonal specimens with 80%>Os>32%, osmiridium for cubic specimens with Os<32% and native osmium for specimens Os>80%.〔M. H. Hey, (''The nomenclature of the natural alloys of osmium and iridium'' ), 1963.〕 More recently, the Nomenclature Subcommittee of the Commission of New Minerals and Mineral Names, International Mineralogical Association has declared the mineral names osmiridium and iridosmine invalid and to be replaced by iridium and osmium, respectively. Other named naturally occurring alloys of platinum metals have included: iridrhodruthenium, platiniridium, ruthenosmiridium, and rutheniridosmine. The properties of these alloys generally fall between those of the members, but hardness is greater than the individual constituents. ==Occurrence== Osmiridium is very rare, but it can be found in mines of other platinum group metals. One very productive mine was operated at Adamsfield near Tyenna in Tasmania during the Second World War with the ore shipped out by railway from Maydena. The site of the mine is now totally reclaimed by dense natural bush. It was once one of the world's major producers of this rare metal, and the osmiridium was mostly found in shallow alluvial workings.〔Bottrill, R. S.; 1989, Economic Geology Appendix A; Tasmanian Geol. Surv. Explanatory Rept. 73 ( Huntley.) Cited at (Adamsfield, Tasmania, Australia ). Mindat.org. Accessed May 5, 2010.〕 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「Osmiridium」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.