青海大灶火河地区地球化学特征及找矿远景研究  

Research on Geochemical Characteristics and Prospecting Prospect in the Dazaohuohe Region of Qinghai Province

作　　者：郭富先 蔡成龙 GUO Fuxian;CAI Chenglong(Qinghai Nonferrous Geological and Mineral Exploration Bureau,Xining,Qinghai 810000,China;Qinghai Provincial Second Non-ferrous Geological Exploration Institute,Xining,Qinghai 810000,China)

机构地区：[1]青海省有色地质矿产勘查局,青海西宁810000 [2]青海省有色第二地质勘查院,青海西宁810000

出　　处：《中国锰业》2023年第3期32-37,45,共7页China Manganese Industry

基　　金：青海省地质勘查基金项目(编号:QH2021-DJ198)。

摘　　要：大灶火河地区位于塔柴板块南缘,东昆仑造山带东段,属东昆仑北部Fe、Pb、Zn、Cu、Co、W、Sn、Au地球化学带,与伯喀里克-香日德印支期金、铅、锌(铜、稀有、稀土)成矿带在空间位置上保持了一致性,具有很好的热液型金属矿产找矿前景。通过1∶2.5万与1∶5万地球化学异常对比,对1∶5万8处综合异常显示了较好的重现性。结合地球化学分布规律、区域成矿地质条件特征,1∶2.5万地球化学测异常圈定了9处找矿靶区,明确了以硅卡岩型多金属矿、构造蚀变岩型金多金属矿、岩浆熔离型铜镍矿为主要找矿方向,并发现了大灶火河北铜镍钴矿化体、蒙牧沟铜金矿化体、蒙牧沟铜矿点等,为基础地质研究和成矿前景分析提供了依据。The Dazaohuohe region is located in the southern margin of Tarim-qaidam plate,east section of East Kunlun orogenic belt.It is belong to the north area of East Kunlun Fe,Pb,Zn,Cu,Co,W,Sn,Au geochemical zone,and keep the consistency with the Bokalik-chamrishi Indo-Chinese period,gold,lead,zinc,copper,rare,rare earth metallogenic belt in space position,and has good prospecting prospect for hydrothermal metal mineral.By comparing 1∶25,000 geochemical anomalies with 1∶50,000 geochemical anomalies,the 8 composite anomalies of 1∶50,000 geochemical anomalies show good reproducibility.Combined with geochemical distribution rules and regional metallogenic geological conditions,the 1∶25,000 geochemical anomalies delineate 9 prospecting target area.The main prospecting direction is defined as silicarite type polymetallic ore,tectonic alteration type gold polymetallic ore and magmatic melting type copper-nickel ore.North Dazaohuohe Copper-nickel-cobalt mineralized body,Mengmugou copper-gold mineralized body and Mengmugou copper deposit have been found,which provide basis for basic geological research and metallogenic prospect analysis.

关 键 词：东昆仑造山带 大灶火河地区 铜镍钴矿 地球化学特征 找矿远景 

分 类 号：P618.2[天文地球—矿床学]