内蒙古科右中旗哈嘎屯地区多金属矿成矿地质特征及找矿标志

Metallogenic Geological Characteristics and Prospecting Criteria of HagatunPolymetallic Deposit in Keyouzhong Banner,Inner Mongolia

内蒙古科右中旗哈嘎屯地区多金属矿位于大兴安岭铀及多金属成矿带的中南部,具有良好的成矿远景。本文对研究区内地层、岩体、构造、蚀变、矿化等地质特征开展系统研究,初步总结了区内多金属矿化的矿化特征、控矿要素、成矿规律,并初步建立了研究区的成矿模式;认为本区找矿空间较大,多金属矿(化)种类主要以Mo、Ag、Pb、Zn、Cu、Au元素为主,成矿类型总体为火山热液脉型,为燕山期多期次热液活动叠加成矿。赋矿围岩为海西期岩体,受北西构造控制明显,多伴有强烈的硅化、黄铁矿化、钾长石化。认为哈嘎屯地区具有良好多金属成矿条件以及较好的找矿潜力。

The polymetallic deposit in Hagadun area of Keyouzhong Banner,Inner Mongolia is located in the central and southern part of the uranium and polymetallic metallogenic belt of the Greater Khingan Mountains and has a good metallogenic prospect.In this paper,the geological characteristics of strata,rock mass,structure,alteration and mineralization in the study area are systematically studied,the mineralization characteristics,ore-controlling elements and metallogenic regularity of polymetallic mineralization in the study area are preliminarily summarized,and the metallogenic model of the study area is preliminarily established.It is considered that there is a large prospecting space in this area,and the types of polymetallic mineralization are mainly Mo,Ag,Pb,Zn,Cu and Au elements.The metallogenic type is generally volcanic hydrothermal vein type,which is the superposition mineralization of Yanshanian multi-stage hydrothermal activities.The ore-bearing rock mass is Hercynian,which is obviously controlled by the NW structure,and is often accompanied by strong silicification,pyrite and potassium-feldsphaerite.It is concluded that Hagatun area has good polymetallic metallogenic conditions and good prospecting potential.