内蒙古东乌珠穆沁旗钨矿床地球化学特征及深部找矿预测  

Geochemical characteristics and deep prospecting prediction of the East Ujimqin Banner Tungsten Deposit,Inner Mongolia

作　　者：任俊霖 孙志辉 姚嘉琪 刘瑞年 刘宁 王鹏 Ren Junlin;Sun Zhihui;Yao Jiaqi;Liu Ruinian;Liu Ning;Wang Peng(Hebei Huakan Resources and Environment Survey Co.,Ltd.;Hebei Key Laboratory of Geological Resources Exploration,Development,and Ecological Protection;514 Brigade of North China Geological Exploration Bureau)

机构地区：[1]河北华勘资环勘测有限公司 [2]河北省地质资源勘探开发与生态保护重点实验室 [3]华北地质勘查局五一四地质大队

出　　处：《黄金》2025年第4期92-101,共10页Gold

基　　金：内蒙古自治区地质勘查基金项目(NMKD2009-08);华北地质勘查局五一四地质大队科研项目(HKWYS2023-C2);华北地质勘查局五一四地质大队内蒙古自治区东乌珠穆沁旗钨矿深部扩界勘查项目;中国地质调查局项目(1212011085239,1212011120697)。

摘　　要：为预测东乌珠穆沁旗钨矿床1号矿体深部变化趋势,在对矿区地质特征和矿床成因研究基础上,开展了系统野外地质调查、流体包裹体测试及地球化学等相关研究工作。发现1号矿体受北西向断裂控制明显。矿体具多期多阶段成矿特点,结合格里戈良原生晕轴向分带法研究得到1号矿体原生晕轴向分带序列自上而下为Mo-F-Li-Au-Sn-W-B-As-Be-Ag-Zn-Cd-Cu-Pb-Bi-Ba,具备明显“前缘晕+尾晕共存”“前缘晕+近矿晕共存”叠加组合特征。结合W元素异常空间分布特征、成矿流体包裹体特征,推断1号矿体向深部(8中段以下)仍具有较大找矿潜力,并通过钻探成功验证,表明东乌珠穆沁旗钨矿床深部仍存在较大增储潜力。To predict the deep-seated variation trends of Orebody 1 in the East Ujimqin Banner Tungsten Deposit,this study carries out related studies including systematic field investigations,fluid inclusion analysis,and geochemistry,based on the study of geological characteristics and genesis of the deposit.Key findings include Orebody 1 is dominantly controlled by NW-trending fractures and exhibits multi-stage mineralization.According to the Gregorian axial zoning method of primary halos,the vertical zoning sequence of primary halos in Orebody 1 is determined as(from top to bottom):Mo-F-Li-Au-Sn-W-B-As-Be-Ag-Zn-Cd-Cu-Pb-Bi-Ba,displaying distinct superimposed features of"coexisting front halo+tail halo"and"front halo+near ore halo".Combined with the spatial distribution of W anomalies and characteristics of ore-forming fluid inclusions,it is inferred that Orebody 1 retains significant prospecting potential at depths below Level 8.Drilling validation confirmed this hypothesis,revealing substantial untapped resources in the deep sections of the East Ujimqin Banner Tungsten Deposit.

关 键 词：原生晕 轴向分带 深部预测 东乌珠穆沁旗钨矿床 内蒙古 流体包裹体 

分 类 号：TD15[矿业工程—矿山地质测量]