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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 Playfairite ： ウィキペディア英語版 Playfairite Playfairite is a very rare sulfosalt mineral with chemical formula Pb16Sb18S43 in the monoclinic crystal system,〔(Mindat information page for Playfairite )〕 〔(Webmineral information page for Playfairite )〕 named after the Scottish scientist and mathematician John Playfair.〔(Handbook of Mineralogy information page for Playfairite )〕 It was discovered in 1966 by the Canadian mineralogist John Leslie Jambor. 〔 〔(Michael Fleischer (1968), ''New Mineral Names'', American Mineralogist, vol. 53, pp. 1424 )〕 〔(Lynne Jambor and John Dutrizac (2008), ''Memorial of John L. Jambor (1936-2008)'', American Mineralogist, vol. 93, pp. 710-712 )〕 Lead gray to black in colour, its lustre is metallic. Playfairite shows strong reflection pleochroism from white to brownish gray. Playfairite has a hardness of 3.5 to 4 on Mohs scale and a density of approximately 6.44.〔 The type locality is Taylor Pit (Concession XIV; Lot 13), Huntingdon Township, Madoc Area, Hastings Co., Ontario, Canada. 〔 Small deposits have also been found in Les Cougnasses Mine, Orpierre, Hautes-Alpes, Provence-Alpes-Côte d'Azur, France, Khaidarkan Sb-Hg deposit (Chaidarkan), Fergana Valley, Alai Range, Osh Oblast, Kyrgyzstan and Reese River District, Lander Co., Nevada, USA. 〔 ==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「Playfairite」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.