摘要
本文讨论了11颗陨石的微量元素变化特征和相关关系,稀土元素的分配模式,铁陨石化学群的划分,以及玻璃陨石所属化学群。
This paper deals with the correlations and variations of trace elements and the distribution patterns of REE of eleven meteorites, and the chemical groups of sidero-vitreous meteorites Except for Hf-Sc and Th-U, the correlation coefficients of all elements discussed range form 0.5 to 0.98.Except for Fe-Cr all show positive correlation. REE has a flat distribution pattern with little enrichment of Eu, but vitreous metorites strongly depleted HREE (comparing with LREE). Six sidero-meteorites can be divided into three types, namely IAB, ⅢAB and indistinguishable one. The sidero-meteorites which occured in Fengzhen and Liangcheng, Inner Mongolia, have the same origin. According to the similarities in the compositions and the distribution patters of REE, the vitreous-meteorites in Guangdong province belong to the Autralian and Southeast Asian meteorite groupe.
关键词
陨石
化学群
化学成分
meteorite, chemical group, same origin
