鲁西白彦砾岩中金刚石特征及来源探讨

摘要

By comparing characteristics of the diamond which is derived from Baiyan conglomerate with known dia⁃mond original mineral belt in Mengyin and reservoir in this area, combining with content distribution of indicative mineral chromite and content changes of diamond in Baiyan conglomerate, it is indicated that there are three possi⁃ble sources in the diamond of Baiyan conglomerate:first is derived from known diamond original mineral belt in Mengyin county;second is derived from unknown near sources original mine; third is derived from reservoir posi⁃tion in the area.%通过对白彦砾岩中金刚石、蒙阴已知金刚石原生矿带及区内储集层位金刚石特征进行对比，结合对白彦砾岩中金刚石的指示性矿物铬铁矿含量分布及白彦砾岩中金刚石含量变化情况，分析认为白彦砾岩中金刚石有3种可能来源：一是来源于蒙阴已知金刚石原生矿带，二是来源于未知的近源原生矿，三是来源于区内除李官组及本溪组储集层之外的其他储集层。