内蒙古秦家沟多金属矿区岩石地球化学特征及找矿方向  

The Geochemical Characteristics and Prospecting Direction of Qinjiagou Polymetallic Metallogensis,Inner Mongolia

作　　者：吕平[1] 孙亮亮[1] 李翾[1] 刘博[1] 郝适合 孙岩[1] 李淑芳[1] 曹振帅 

机构地区：[1]武警黄金第四支队,辽宁辽阳111000

出　　处：《黄金科学技术》2013年第3期38-42,共5页Gold Science and Technology

摘　　要：秦家沟多金属矿区位于内蒙古库伦旗,区内矿(化)体赋存于石炭系家道沟组(C2j)板岩夹硬砂岩、灰岩与花岗岩(γ24-3)接触带板岩中。通过对秦家沟探槽岩石样品微量元素开展R型聚类分析和因子分析来揭示元素间及元素与地质作用之间的相互关系,认为本区存在多期成矿作用,区内主成矿元素为Zn、Ag、Pb、Au和Mo,伴生元素为As和Sb。基于因子间彼此独立的关系,说明本区的矿化存在多期次、多阶段的成矿作用,矿体是由含矿热液多次反复作用形成的。该矿区主要的找矿标志之一是印支、燕山期侵入岩,强烈的构造岩浆活动形成了岩浆热液型矿床和中—低温热液型矿床。Qinjiagou polymetallic metallogensis is located in southern Daxing＇anling Mountains.The ore bodies are hosted in slate which is the contact zone of C2j and granite.The trace elements of trench rock samples can reveal the relationships between element and element,element and geology by R cluster analysis and factor analysis in Qinjiagou mining area.And this area is considered to have multiple stages of mineralization.The main metallogenie elements are Zn,Ag,Pb,Au and Mo,and As and Sb are the accompanying elements.The ore is formed by the revrsed cyclic action of the ore-bearing hydrothermal fluid.It is the main prospecting criteria for the intrusive rock of Indo-Chinese epoch and stage of Yanshan.The strong tectono-magmatic activities formed the magmatic hydrothermal deposit and the low-mid temperature hydrothermal deposit.This article has put forward the main prospecting criteria, and provides an important basis for the next step prospecting in this area or the surrounding.

关 键 词：地球化学特征 微量元素 找矿标志 秦家沟 内蒙古 

分 类 号：P618.2[天文地球—矿床学] P632[天文地球—地质学]