青海益克郭勒斑岩型钼矿深部找矿潜力分析  

Deep prospecting potential analysis of Yikeguole porphyry molybdenum deposit in Qinghai

作　　者：王永德 李生虎 WANG Yongde;LI Shenghu(No.5 Geological Survey Institute of Qinghai Province,Xining 810099,Qinghai,China)

机构地区：[1]青海省第五地质勘查院,青海西宁810099

出　　处：《矿产与地质》2023年第4期794-805,共12页Mineral Resources and Geology

基　　金：2022年青海省省级地勘专项资金项目(编号:2022012052kc024)资助。

摘　　要：益克郭勒钼矿床是东昆仑成矿带东段近年来新发现的斑岩型钼矿床,深部新发现有厚大、高品位隐伏Mo矿体。文章通过研究分析矿体基本地质特征、成矿规律及成因特点等,结合地球物理特征和地球化学特征及深部成矿信息,认为矿床为斑岩型钼(铜)矿床,自岩体外至岩体内具有青磐岩化带→钾化+硅化带→黄铁矿化壳→钾化带的蚀变分带,属于典型的斑岩型矿床的矿化蚀变特征,成矿母岩为具埃达克质的侵入岩,矿化引起的弱磁异常和地球化学异常具有面积大和向深部拓延的特点,显示深部具有较大找矿前景;激电测井及原生晕分析成果显示,成矿最有利位置应位于ZK001的NE及NW向,也就是C2磁异常0值线及两侧弱磁异常区位置上。研究结果初步指出了找矿方向,并对研究区找矿前景作出了评价。Yikeguole molybdenum deposit is a new porphyry type molybdenum deposit discovered in the east part of East Kunlun metallogenic belt in recent years.Based on the research and analysis of the basic geological characteristics,metallogenic regularity and genetic characteristics of the ore body,combined with the geophysical and geochemical characteristics and deep metallogenic information,the paper considers that the deposit is a porphyry molybdenum(copper)deposit,which has the alteration zonation from outside of the rock mass to inside of the rock mass,i.e.,the cyanopanite zone→the potassic+silicification zone→the pyrite crust→the potassic zone.The ore-forming parent rock is Adakian intrusive rock.The weak magnetic anomaly and geochemical anomaly caused by mineralization have the characteristics of large area and extend to the deep,which indicates that there is a large prospecting prospect in the deep area.The result of IP logging and primary halo analysis shows that the most favorable position for mineralization should be located in the NE and NW direction of ZK001 drilling hole,that is,the 0 value line of C2 magnetic anomaly and the weak magnetic anomaly area on both sides.The research result preliminarily pointes out the prospecting direction and evaluates the prospecting prospect of the study area.

关 键 词：斑岩型 地质特征 地球物理特征 成因特点 找矿潜力 益克郭勒 

分 类 号：P588.121[天文地球—岩石学] P618.65[天文地球—地质学]