湘东北钨铜多金属矿集区的划分及其找矿方向探讨

Division of W-Cu polymetallic ore-concentrated area in northeastern Hunan and its prospecting direction

湘东北地区位于扬子地块与华南地块的结合部位,跨华南与扬子两大成矿域,集长江中下游和钦杭成矿带两个成矿区带之特点。根据其独特的构造环境与成矿作用特点,将湘东北地区划分出临湘和平浏两个矿集区。临湘矿集区属于扬子地块的构造环境,成矿作用主要受长江中下游铁铜多金属成矿带的控制,是一个以铁钨铅锌为主的多金属高度集中分布区。平浏矿集区属于华夏地块的构造环境,成矿作用受钦杭成矿带控制为主,兼有长江中下游铁铜多金属成矿带的影响,是一个以铜金为主的多金属矿集区。

Northeastern Hunan is located in the junction of Yangtze massif and Southern China massif,and it cuts across the two major metallogenic domains of Southern China and Yangtze.Therefore the area has characteristics of the two metallogenic belts which are the middle and lower reaches of Changjiang River and Qinhang metallogenic belt.This paper divided northeast Hunan into two ore-concentrated areas which are Linxiang and Pingliu according to its unique structural environment and metallogenic characteristics.Linxiang ore-concentrated area exists in the structural environment of Yangtze massif,and is a highly concentrated polymetallic area which is dominated by metals like Fe,W,Pb and Zn,while its mineralization is mainly controlled by the Fe-Cu polymetallic metallogenic belt of the middle and lower reaches of Changjiang River.Pingliu ore-concentrated area exists in the structural environment of Huaxia massif and is a polymetallic oreconcentrated area which is dominated by metals like Cu and Au,while its mineralization is mainly controlled by Qinhang metallogenic belt and is under the influence of Fe-Cu polymetallic metallogenic belt of the middle and lower reaches of Changjiang River.