Through analysis on characteristics, forming process, time and origin of diamond, it is regarded that there are unfound primary diamonds in Baiyan Area in western Shandong.

• 通过分析砾岩的特征、砾岩的形成过程、时代及金刚石的来源,认为鲁西白彦地区存在尚未发现的金刚石原生矿。