Synchrotron Radiation Study of the Polycrystalline Diamond from Western Yangtze Craton and Its Significance
YANG Zhi-jun1, 2, HUANG Yi-cong1, ZHOU Wen-xiu1*, HUANG Shan-shan1, CHEN Yao-ming1, LEI Xue-ying1, ZHANG Qian-zhi3
1. School of Earth Science and Engineering, Sun Yat-sen University，Guangzhou 510275，China
2. Guangdong Provincial Key Lab of Geological Processes and Mineral Resource Survey, Guangzhou 510275，China
3. Instrumental Analysis & Research Center, Sun Yat-sen University，Guangzhou 510275，China
Abstract：With its high brightness and high collimation, the application of synchrotron radiation micro-infrared spectroscopy in polycrystalline diamond can significantly improve the accuracy of the analysis of nitrogen concentration and the residence time in the mantle. The results of synchrotron radiation micro-infrared mapping of the polycrystalline diamond demonstrated that nitrogen impurity in the sample had high content (500～1 300 μg·g-1) and high aggregation, which indicated that the diamonds from western Yangtze craton are type IaAB. The residence time in mantle of the sample was between 0.06 to 0.12 Ga. In general, the sample had different growth zones and multiple diamond grains which crystallize early respectively and aggregate later. In addition, some of the grains briefly ceased to grow during the polycrystalline diamond formation which formed in a volatile material situation.
杨志军，黄逸聪，周文秀，黄珊珊，陈耀明，雷雪英，张倩芝. 扬子克拉通西部砂矿型金刚石多晶的同步辐射研究及意义[J]. 光谱学与光谱分析, 2018, 38(12): 3871-3874.
YANG Zhi-jun, HUANG Yi-cong, ZHOU Wen-xiu, HUANG Shan-shan, CHEN Yao-ming, LEI Xue-ying, ZHANG Qian-zhi. Synchrotron Radiation Study of the Polycrystalline Diamond from Western Yangtze Craton and Its Significance. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2018, 38(12): 3871-3874.
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