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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 Knorringite ： ウィキペディア英語版 Knorringite Knorringite is a mineral species belonging to the garnet group, and forms a series with the species pyrope. It was discovered in 1968 in the Kao kimberlite pipe in the Butha-Buthe District of Lesotho and is named after Oleg Von Knorring, a professor of mineralogy at the University of Leeds in England.〔〔 Synthetic knorringite has the pure endmember formula Mg3Cr2(SiO4)3.〔 As knorringite is a member of the knorringite - pyrope series, natural samples contain variable aluminium in the chromium site.〔(Nixon, P.H. and G. Hornung (1968) ''A new chromium garnet end member, knorringite, from kimberlite,'' Amer. Mineral., 53, 1833 - 1840 )〕 Knorringite is a greenish blue color with a Mohs scale of mineral hardness of six to seven. It occurs as a rare component within ultramafic nodules in kimberlites in association with olivine, enstatite, chrome diopside, chromian pyrope, chromian spinel, ilmenite, perovskite, zircon, diamond, omphacite, rutile, carbonates and micas. It has been reported from the Red Ledge mine in Nevada County, California in addition to the type location in Lesotho.〔 Knorringite is a tracer mineral in the search for diamonds in kimberlite pipes. ==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「Knorringite」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.