四川省荥经县羊儿窝铁铅多金属矿地质特征及找矿前景浅析

Simple Analysis of Geological Features and Prospecting Perspective of the Yangerwo Fe-Pb-Polymetallic Deposit in Yingjing,Sichuan

荥经县羊儿窝铁铅多金属矿位于扬子准地台西南缘的上扬子台坳之峨眉山断拱。区域内出露地层为震旦系、寒武系、奥陶系、志留系,其中震旦系为区内含矿层位。通过对矿区地质、物化探异常、矿体特征、矿石矿物特征和围岩蚀变特征进行总结研究,总结矿床成矿规律和找矿标志,分析其找矿潜力。通过物化探测量,在矿区圈定了Cu9、Pb10异常,发现了两条铅锌矿体,矿石矿物主要为黄铁矿、次为方铅矿及闪锌矿,围岩蚀变主要为硅化、碳酸盐化。经过分析,初步判断该矿床属沉积-改造型多金属矿床。对成矿地质背景、矿体特征、矿床成因和找矿标志等进行综合分析,矿区具有较好的找矿前景。

The Yangerwo Fe-Pb-polymetallic deposit in Yingjing,Sichuan lies in the Emeishan broken arch of the upper Yangtze platform depression where Sinian,Cambrian,Ordovician and Silurian are exposed.The Sinian is host horizon.Cu 9 and Cu 10 anomalies are delineated by geophysical and geochemical survey and 2 Pb-Zn orebodies are found.Ore minerals are pyrite,galena and sphalerite.Wallrock alterations are silicification and carbonatization.The deposit is sedimentary-reformed one.The prospecting prospect in the district is good.