南丹铁陨石微量元素的微区分布特征

MICRO-DISTRIBUTION PATTERNS OF TRACE ELEMENTS IN NANDAN IRON METEORITE

本文用同步辐射X荧光微区扫描法(SRXRFMS)研究了南丹铁陨石中微量元素的微区分布特征。讨论了南丹铁陨石的分类、起源及演化等基本问题。指出南丹铁陨石似分为IAB群较合理,它可能是由具有球粒陨石组成的母源物质受冲击、经局部熔融而形成。

In this paper the micro-distribution patterns of trace elements in the Nandan iron meteorite are studied by a synchrotron radiation X-ray fluorescence micro-scanning method (SRXRFMS).On the basis of our experimental results the classification,origin,evolution and other aspects are discussed.It seems reasonable that the Nandan iron meteorite should be classified to the group IAB.Further,it might be formed from the source matter with the chondritic composition,which experienced the impact and partial melting.