安徽泾县茂林岩体特征及成矿分析  

Characteristics and metallogenic potential of the Maolin rock mass in Jingxian County of Anhui Province

作　　者：卜香萍[1] 徐旭峰[2] Bu Xiangping;Xu Xufeng(Anhui Institute of Geophysical and Geochemical Prospecting Techniques, Hefei 330021, Anhui, China;Geological Survey of Jiangsu Province, Nanjing 210049, Jiangsu, China)

机构地区：[1]安徽省地球物理地球化学勘查技术院,安徽合肥330021 [2]江苏省地质调查研究院,江苏南京210049

出　　处：《地质学刊》2019年第2期270-274,共5页Journal of Geology

基　　金：安徽省公益性地质项目(2012-25)

摘　　要：茂林岩体位于安徽南部江南隆起带北侧石台—泾县褶皱带,内部相为二长花岗岩,边缘相为细粒花岗闪长岩,后期有花岗闪长斑岩等脉岩侵入,岩石属于钙碱性岩系列,其中Cu、Mo、Ag丰度较高。茂林岩体与周边发现的矿床(点)均存在一定的成因联系,找矿潜力较大。北东向断裂及南北向断裂构造与浅成相二长花岗岩、花岗闪长岩岩株及岩脉接触部位是周边寻找斑岩型钼矿的有利部位,岩体晚期花岗闪长斑岩岩脉是寻找铜、铅矿的潜力区。The Maolin rock mass is located in the Shitai-Jingxian fold belt on the north side of the Jiangnan orogenic belt in southern Anhui Province. The inner facies of this rock mass is monzonite, and its marginal facies is fine-grained granodiorite, also intruded by dike rocks such as granodiorite porphyry in late stage. The rocks fall in calc-alkaline rocks and are rich in Cu, Mo and Ag. The Maolin rock mass has some genetic relationship with the nearby ore deposits (occurrences), indicative of a great prospecting potential. The contacts of NE-trending faults and NS-trending faults with epigenetic monzonitic granite, granodiorite stocks and dikes are favorable locations for prospecting porphyry-type molybdenum deposits. Late Maolin granodiorite porphyry dike is a potential area for discovering copper and lead deposits.

关 键 词：花岗岩 岩体特征 斑岩型钼矿 铜铅矿 成矿分析 安徽茂林 

分 类 号：P588.1[天文地球—岩石学]