【摘要】 山东迄今发现的蓝宝石砂矿和原生矿位于昌乐地区。根据成因蓝宝石砂矿层分为冲积砂矿层、洪积砂矿层和残坡积砂矿层;洪积砂矿层中蓝宝石最富。蓝宝石原生矿赋存于新生代新近纪临朐群牛山组和尧山组的玄武岩中,与高钾碱性玄武岩关系密切。更多还原

【Abstract】 Sapphire sand deposit and its primary deposit which ha ve been found by now in Shandong province locate in Changle area. According to i ts origin, sapphire sand strata are divided into sand wash stratum, pluvial stra tum and relict drifted sand stratum, while sapphire concentrated well in drifted sand stratum. Sapphire-primary deposit occurred in basalts of Niushan formation and Yaoshan formation in Cenozoic new Neogene Linqu group, which has a close re lation with high-K alkalic basalts.更多还原