综合物化探技术在河南嵩县某金矿勘查中的应用  

Application of comprehensive geophysical and geochemical exploration technology in the exploration of a gold deposit in Song County,Henan

作　　者：王东伟 李卓然 张斌 WANG Dongwei;LI Zhuoran;ZHANG Bin(Henan Second Geological Exploration Institute Co.,Ltd.,Zhengzhou 450000,Henan,China;Mineral Resources Exploration Center of Henan Geological Bureau,Zhengzhou 450000,Henan,China)

机构地区：[1]河南省第二地质勘查院有限公司,河南郑州450000 [2]河南省地质局矿产资源勘查中心,河南郑州450000

出　　处：《矿产与地质》2024年第4期761-767,共7页Mineral Resources and Geology

基　　金：河南省财政地质勘查项目(豫自然资发[2019]22号)资助。

摘　　要：河南省熊耳山矿集区金矿产资源丰富,勘查区内存在金矿产的可能性较大,针对勘查区的地质、构造和成矿条件,采用综合物化探技术方法进行找矿工作。在勘查区开展土壤地球化学测量,圈定了HT2综合异常,元素异常特征显示该区具有寻找金矿产的地球化学前提条件。地球化学异常区发育铅锌硫化物,岩(矿)石物性特征具有明显差异,采用激电中梯剖面方法圈定了1个激电异常JD1,异常具有低视电阻率、高视极化率特征,结合化探成矿元素异常强度,推测物探异常JD1为矿致异常,据磁法剖面成果和槽探工程综合推断F 1断裂构造为含矿构造。为确定F 1断裂构造的产状和下部金矿体的展布形态,实施钻孔施工验证,发现2条金矿体,矿石类型为破碎带蚀变岩型。2条金矿体均位于勘查区物化探异常套合较好部位,本次综合物化探找矿方法在勘查区取得较好的找矿效果,其工作方法可为周边勘查区找矿工作提供一定的参考。Xiongershan mining area in Henan Province is rich in gold mineral resources,and there is a great possibility of gold deposit in the exploration area.Based on the geological,structural,and ore-forming condition of the exploration area,comprehensive geophysical and geochemical exploration techniques are used for ore exploration.Soil geochemical survey is conducted in the exploration area,and HT2 comprehensive anomalies are delineated.The elemental anomaly characteristics indicate that there is a geochemical prerequisite for searching for gold deposit in the area.The geochemical anomaly contains lead zinc sulfides,and there are significant differences in the physical properties of rocks(ores).One induced polarization anomaly JD1 is delineated using the induced polarization gradient profile method,which has low apparent resistivity and high apparent polarization characteristics.Combined with the intensity of geochemical exploration and ore-forming element anomalies,it is speculated that the anomaly JD1 is a mineral induced anomaly.Based on the result of magnetic profiling and trench exploration engineering,it is inferred that F1 structure is an ore-bearing structure.To determine the occurrence of F 1 structure and the distribution pattern of the lower gold deposit body,drilling construction is arranged for verification,and two gold orebodies are discovered,with the ore type of fractured zone altered rock type.Both gold orebodies are located in the areas with good geophysical and geochemical anomaly in the exploration area.The comprehensive geophysical and geochemical exploration technology has achieved a good prospecting result in the exploration area,and the working method can provide some reference for the surrounding exploration areas.

关 键 词：地球化学 激电异常 高磁剖面 含矿构造 金矿体 河南嵩县 

分 类 号：P631[天文地球—地质矿产勘探] P632[天文地球—地质学] P618.51