罗村斑岩-角砾岩型钼矿床激电异常特征与深部找矿方向  

Induced Polarization(IP)Anomaly Characteristics and Deep Prospecting Direction of Porphyry-Breccia Type Molybdenum Deposit in Luocun

作　　者：张春艳 徐萌 冯润玲 焦平 王耀升 宋双全 ZHANG Chunyan;XU Meng;FENG Runling;JIAO Ping;WANG Yaosheng;SONG Shuangquan(Henan Nonferrous Metal Mineral Exploration Engineering Technology Research Center,Zhengzhou 450016,Henan,China;The Fifth Geological Brigade,Henan Bureau of Nonferrous Metals Geology and Mineral Resources,Zhengzhou 450016,Henan,China)

机构地区：[1]河南省有色金属矿产探测工程技术研究中心,河南郑州450016 [2]河南省有色金属地质矿产局第五地质大队,河南郑州450016

出　　处：《中国钼业》2023年第1期7-12,共6页China Molybdenum Industry

基　　金：河南省国土资源科技项目(编号:2011-072)。

摘　　要：罗村斑岩-角砾岩型钼矿是近年发现的一个中型钼矿床,斑岩体由外向内分布花岗闪长岩—爆破角砾岩—钾长花岗斑岩,呈环带状分布,钼矿体分布于爆破角砾岩中。较早发现的钼矿体主要分布在北角砾岩带,南角砾岩带的找矿工作一直未能突破。通过1∶10000大功率激电测量,在北角砾岩带钼矿体对应部位发现了明显的激电异常(2%~5%),南角砾岩带的激电异常与北角砾岩带大体相似。通过精测剖面解释,推测在南角砾岩带深部应有隐伏钼矿体赋存。经钻探验证自深度400m向下钼矿化普遍较好,并发现了4 m厚的辉钼矿,为以后深部找矿工作指明了方向。Luocun porphyry-breccia type molybdenum deposit is a medium-sized molybdenum deposit discovered in recent years.The porphyry body is distributed with granodiorite-blasting breccia-potassium feldspar granite porphyry from outside to inside,in a ring zonal distribution,and the molybdenum ore body is distributed in the blasting breccia.Molybdenum ore bodies discovered earlier are mainly distributed in the north breccia belt,and the prospecting work in the south breccia belt has not been broken through.Through 1∶10000 high-power IP measurement,obvious IP anomalies(2%~5%)are found in the corresponding parts of molybdenum ore bodies in the north breccia belt,and the IP anomalies in the south breccia belt are roughly similar to those in the north breccia belt.Through the interpretation by precise survey profile,it is speculated that there should be concealed molybdenum ore bodies in the deep part of the south breccia belt.It is verified by drilling that molybdenum mineralization is generally good from 400 m depth downward,and a 4 m thick molybdenite is found,which points out the direction for future deep prospecting.

关 键 词：斑岩型钼矿 激电异常特征 剖面综合解释 深部找矿 

分 类 号：P618.65[天文地球—矿床学]