翻訳と辞書 Words near each other ・ Scaphyglottis livida ・ Scaphyglottis longicaulis ・ Scaphyglottis micrantha ・ Scaphyglottis modesta ・ Scaphyglottis prolifera ・ Scaphyglottis reflexa ・ Scaphyglottis sickii ・ Scaphyglottis stellata ・ Scaphytopiini ・ Scapigliatura ・ Scapin ・ Scapino ・ Scapitani ・ Scapochariesthes nigroapicipennis ・ Scapoli ・ Scapolite ・ Scaposerixia ・ Scaposodus ・ Scapozygocera ・ Scapozygoceropsis albertisi ・ Scappino (fashion house) ・ Scappoose Airport ・ Scappoose High School ・ Scappoose Industrial Airpark ・ Scappoose, Oregon ・ Scapriano ・ Scaptelytra ・ Scapteriscus ・ Scapteriscus abbreviatus ・ Scapteriscus borellii 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 Scapolite ： ウィキペディア英語版 Scapolite The scapolites (Gr. ''asairos'', rod, stone) are a group of rock-forming silicate minerals composed of aluminium, calcium, and sodium silicate with chlorine, carbonate and sulfate. The two endmembers are meionite (Ca4Al6Si6O24CO3)〔(Meionite data on Webmineral )〕 and marialite (Na4Al3Si9O24Cl).〔(Miarialite data on Webmineral )〕〔(Scapolite group on Mindat.org )〕 Silvialite (Ca,Na)4Al6Si6O24(SO4,CO3) is also a recognized member of the group.〔(Silvialite data on Webmineral )〕〔 ==Properties== The group is an isomorphous mixture of the meionite and marialite endmembers. The tetragonal crystals are hemihedral with parallel faces (like scheelite), and at times of considerable size. They are distinct and usually have the form of square columns, some cleavages parallel to the prism-faces. Crystals are usually white or greyish-white and opaque, though meionite is found as colorless glassy crystals in the ejected limestone blocks of Monte Somma, Vesuvius. The hardness is 5 - 6, and the specific gravity varies with the chemical composition between 2.7 (meionite) and 2.5 (marialite). The scapolites are especially liable to alteration by weathering processes, with the development of mica, kaolin, etc., and this is the cause of the usual opacity of the crystals. Owing to this alteration, and to the variations in composition, numerous varieties have been distinguished by special names. Scapolite is commonly a mineral of metamorphic origin, occurring usually in crystalline marbles, but also with pyroxene in schists and gneisses. The long slender prisms abundant in the crystalline marbles and schists in the Pyrenees are known as dipyre or couzeranite. Large crystals of common scapolite (wernerite) are found in the apatite deposits in the neighborhood of Bamble near Brevik in Norway, and have resulted from the alteration of the plagioclase of a gabbro.〔Chisholm, Hugh, ed. (1911). Encyclopædia Britannica (11th ed.). Cambridge University Press〕 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「Scapolite」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.