内蒙古曹四夭斑岩型钼矿综合找矿模式研究  

COMPREHENSIVE PROSPECTING MODEL OF CAOSIYAO PORPHYRY MOLYBDENUM DEPOSIT IN INNER MONGOLIA

作　　者：班宜红[1] 安金亮[1] BAN Yi-hong;AN Jin-liang(No.2 Geological Exploration Institute,Henan Bureau of Geology and Mineral Resources Exploration,Zhengzhou 451464,Henan,China)

机构地区：[1]河南省地质矿产勘查开发局第二地质勘查院,河南郑州451464

出　　处：《中国钼业》2020年第4期20-26,共7页China Molybdenum Industry

基　　金：国家“十二五”攻关项目(编号:09-1-KC045);中国地质调查局科研项目(编号:[2011]03-01-64)共同资助。

摘　　要：内蒙古兴和县曹四夭钼矿超大型钼矿属典型的花岗斑岩型钼矿床,矿体留存完整,成矿母岩花岗斑岩体具强酸、高钾、钙碱性的特点,钼矿化围岩蚀变具强硅化,同时形成钾化、绢云母化蚀变分带。钼矿化体地表水平投影与Mo面状化探异常范围吻合,物探表现为环状ΔT负磁异常,激电显示为大面积异常区,总体表现为幅频率较高、电阻率较低,但在钼矿体品味厚度核心位置,电阻率异常在钼矿体上表现为"中心岛"状,激电显示出电阻率和幅频率均双高的特点。本文作者根据矿床的地、物、化特征构建了曹四夭花岗斑岩型钼矿综合找矿模式,以期对斑岩型钼矿的成矿规律研究和找矿方面提供有益借鉴。Caosiyao superlarge molybdenum deposit in Xinghe county of Inner Mongolia is a typical granite porphyry type molybdenum deposit. The ore body remains intact. The ore-forming parent rock granite porphyry body is characterized by strong acid,high potassium and calc alkaline. The alteration of molybdenum mineralized surrounding rock is characterized by strong silicification, and at the same time, potassium and sericite alteration zones are formed. The horizontal projection of the surface of the molybdenum mineralized body coincides with the anomaly range of the Mo surface geochemical exploration. The geophysical exploration shows a circular delta T negative magnetic anomaly,and the IP shows a large area of anomaly area. The overall performance is that the amplitude frequency is high and the resistivity is low. However,at the core of the grade thickness of the molybdenum ore body,the resistivity anomaly shows a " central island" shape on the molybdenum ore body,and the IP shows the characteristics of both high resistivity and amplitude frequency point. According to the geological,physical and chemical characteristics of the deposit,a comprehensive prospecting model of Caosiyao granite porphyry molybdenum deposit has been constructed,in order to provide useful reference for the study of metallogenic law and prospecting of porphyry molybdenum deposit.

关 键 词：斑岩型钼矿 地物化特征 综合找矿模式 

分 类 号：TD164[矿业工程—矿山地质测量]