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Ameghinite
Ameghinite (Na(HREF="http://www.kotoba.ne.jp/word/11/hydrogen" TITLE="hydrogen">H4B3O7 )〔 or NaB3O3(OH)4〔〔(Webmineral data )〕) is a mineral found in Argentina. It is a soft mineral with a Mohs hardness of 2-3. Ameghinite has a Monoclinic crystal system. It was first described in 1967 for an occurrence in the Tincalayu Mine, Salar Del Hombre Muerto, Salta, Argentina.〔(Mindat.org )〕 It was named for Argentine geologist brothers, Carlos Ameghino (1865–1936) and Florentino Ameghino (1854–1911).〔(Handbook of Mineralogy )〕 == 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「Ameghinite」の詳細全文を読む
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