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西北非4269:一种来自阿尔及利亚撒哈拉地区的富金属榴辉岩
西北非4269(NWA 4269)是一种异常的单成分玄武岩,其特征是含有非常高的金属铁含量(约3%)。它展示了多种岩石结构(残留的岩浆亚辉长岩结构、粗粒和细粒的粒状区域)。NWA 4269还显示出次生固态再加热事件的岩石学证据。辉石具有均匀的成分且富含铁。
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