甘肃天祝冷龙岭中段火山岩岩石学特征及与双龙砂金矿成矿关系初步探讨

On the Mineralized Relationship between Shuanglong Gold Placer and Petrological Characteristics of Volcanic Rocks in the Middle Part of the Lenglongling

本文在野外地质工作和室内分析测试的基础上,初步分析了甘肃天祝冷龙岭中段火山岩岩石学特征及与双龙砂金矿的成矿关系,并提出奥陶纪火山岩及绿片岩是该区砂金矿床的重要矿源岩.

According to a lot of field work,laboratory tests and analytical data,this paper deals with the mineralized relationship between the Shuang-long gold placer and the petrological characteristics of the Ordovicianvolcanic rocks in the middle part of the Lenglongling Mountains in Tian-zhu County,Gansu province.On the basis of the information,the pre-Sent authors point out that the ordovician volcanic rocks and greenschistsshould be regarded as important ore source rocks of the Shuanglong goldplacer.