摘要
皖南地区北接长江中下游铜铁金成矿带,南临赣东北德兴铜、金矿集区,区内出露的燕山期岩浆岩与成矿较密切,岩性以花岗闪长岩、花岗岩为主,矿床成因主要包括矽卡岩型、斑岩型、岩浆热液型、低温热液型、构造蚀变岩型5种类型,可划分为3个成矿系列。岩浆成矿具有专属性特征,铜、钼矿主要与同熔型花岗闪长岩有关;钨矿主要与黑云母花岗岩、花岗(闪长)斑岩关系密切;金多金属矿与燕山期中酸性岩体有一定的联系,银多金属矿与花岗闪长(斑)岩具有一定的联系。
Southern Anhui is adjacent to the copper-iron-gold metallogenic belt in the middle and lower reaches of the Yangtze River in the north,and to the Dexing copper and gold ore-concentrated area of northeastern Jiangxi in the south.The mineralization in southern Anhui is closely related to the Yanshanian magmatic rocks outcropped in the area,which are mainly granodiorite and granite.Genetically,the ore deposits mainly include skarn type,porphyry type,magmatic hydrothermal type,low-temperature hydrothermal type and tectonic altered rock type,which can be divided into three metallogenic series.Magmatic mineralization is specific.Copper and molybdenum deposits are mainly related to granodiorite of syntexis.Tungsten ore deposits are closely related to biotite granite and granite(diorite)porphyry.Gold polymetallic ore deposits are related to the Yanshanian intermediate and acid rock masses to some degree,and silver polymetallic ore deposits to granodiorite(porphyry).
作者
丁宁
陈芳
汤诚
DING Ning;CHEN Fang;TANG Cheng(Geological Survey of Anhui Provice(Institute of Geological Sciences of Anhui Province),Hefei,Anhui 230001,China;Geophysical Prospecting Unit,East China Metallurgical Bureau of Geological Exploration,Wuhu,Anhui 241000,China;Technology Innovation Center of Exploration Engineering for Deep Resources in Overburden Areas,Ministry of Natural Resources,Hefei,Anhui 230001,China)
出处
《安徽地质》
2023年第3期193-197,共5页
Geology of Anhui
基金
安徽省公益性地质工作项目“安徽省岩浆岩数据集成与成矿专属性评价”(编号:2016-g-1-3)
合肥市2021年博士后资助项目“利用区域性花岗岩Nd、Hf同位素填图对江南造山带深部组成结构及其对成矿制约研究”资助。
关键词
皖南
岩浆岩
成矿特征
成矿专属性
South Anhui
magmatic rock
metallogenic characteristics
metallogenic specificity
