摘要
Spinel-group minerals are richly preserved in cosmic dusts, which have been reported to occur in chondritic microspherules of deep sea sediments and polar ice,and considered to be formed by the ablation of extraterrestrial material during the atmospheric entry heating. Spinels have not been considered an important identification for extraterrestrial matter for a very long time, and have not
基金
Project Supported by the National Natural Science Foundation of China
the Analytical Foundation of Centre for Modern Analysis,Nanjing University.
