大别山北麓千斤乡一带钼矿物化探找矿效果及找矿前景  

THE ROLE OF GEOPHYSICAL AND GEOCHEMICAL EXPLORATION IN THE DISCOVERY OF THE QIANJINXIANG Mo DEPOSIT ON THE NORTHERN SLOPE OF THE DABIE MOUNTAIN

作　　者：刘海鹏[1,2] 戴塔根[1] 

机构地区：[1]中南大学地球科学与信息物理学院教育部有色金属成矿预测重点实验室,湖南长沙410083 [2]河南省有色金属地质矿产局第一地质大队,河南郑州450016

出　　处：《物探与化探》2013年第3期411-415,共5页Geophysical and Geochemical Exploration

基　　金：河南省国土资源厅2007年度地质勘查基金项目(豫财办建[2008]135号)

摘　　要：在千斤乡西钼矿区,运用土壤地球化学测量圈出6处综合异常,其中位于矿区南部的Ⅵ号异常规模最大,强度最高,有多个浓集中心,推测与深部隐伏花岗岩体引起的矿化有关。在Ⅵ号异常处采用激发极化法圈定了3个幅频率异常区,大致推断出极化体的埋深、产状,并利用EH4连续电导率测量推断出隐伏岩体埋深、产状及有利的矿化部位,经钻孔验证见到了品位高、厚度大的钼矿体。本次工作表明,千斤乡一带具有寻找斑岩型(钨、铜)钼矿的良好前景;土壤地球化学测量配合激发极化法、EH4连续电导率测量在该地区寻找斑岩型(钨、铜)钼矿床,具有成本低、效率高等优点,值得进一步推广。Soil geochemical and geophysical methods were employed to investigate the comprehensive anomalies in the western part of the Qianjinxiang deposit. The results show that VI anomaly with the biggest scale, highest intensity and multiple concentration center is caused by concealed granite in the deep part which is intimately associated with mineralization. Three amplitude frequency anomaly dis- tricts were delineated at the place of WI anomaly by using the induced polarization method, which could be employed to infer the burial depth and attitude. In combination with the continuous conductivity measurement by using EH4, the authors inferred the burial depth, the attitude of the ore body and the favorable mineralization location. Drilling test revealed a molybdenum ore body with high grade and large thickness. It is thus suggested that Qianjinxiang is a favorable place in search for porphyry Cu-W-Mo deposits, and soil geochemi- cal survey in combination with induced polarization method and EH4 is a useful means for low-cost and high-efficiency exploration in this area.

关 键 词：土壤地球化学测量 激发极化法 EH4 找矿前景 千斤乡西钼矿区 

分 类 号：P632[天文地球—地质矿产勘探]