中国两大主要的原生金刚石产地——山东蒙阴和辽宁复县产出有大量的高质量金刚石.通过对这些纯净金刚石碳同位素组成的激光消熔质谱分析,发现这些地区单颗粒金刚石普遍存在碳同位素组成环带,而且含固态矿物包裹体的金刚石比不含包裹体的金刚石的环带结构更为明显;同时揭示了形成这些金刚石的碳来源于地幔深部,即幔源碳,而无来自地表的由重循环作用形成的壳源碳. China’s two major primary diamond producing areas - Shandong, Inner Mongolia and Liaoning Province, Fu County, a large number of high-quality diamond production.Based on these pure diamond carbon isotope composition of laser melting mass spectrometry found that the prevalence of these single-particle diamond carbon Isotopes make up the annulus and the diamond with solid mineral inclusions is more obvious than that of the diamond without inclusions. At the same time, it is revealed that the carbon forming these diamonds comes from the deep mantle, ie mantle carbon, The shell-source carbon formed by the recirculation.