矿床地质2023，Vol.42Issue(6)：1175-1194,20.DOI:10.16111/j.0258-7106.2023.06.006
内蒙古复兴屯超大型银铅锌矿床地质特征及找矿标志
Geological characteristics and prospecting indicators of Fuxingtun giant Ag-Pb-Zn deposit in Inner Mongolia
摘要
Abstract
The giant Fuxingtun Ag-Pb-Zn deposit is located in the Mesozoic Baoshi volcanic-sedimentary basin of the southern Da Hinggan Mountains.The discovery of this deposit is a major breakthrough in geological prospecting in Inner Mongolia in recent years.The orebodies of the deposit occur within the Late Jurassic-Early Cretaceous continental pyroclastic rock and are controlled by both the volcanic mechanism and grid fault structural system.The inferred resource of Ag metal is 5258 t with an average grade of 198.21g/t,the inferred resource of Zn metal is 1.76 hundred thousand tons with an average grade of 1.61%,and the inferred resource of Pb metal is 0.33 hun-dred thousand tons with an average grade of 1.36%.Based on the analyses of the regional geological setting and geological characteristics of the Fuxingtun deposit,it is preliminarily considered that the prospecting indicators of this type of deposit are as follows:①Late Jurassic-Early Cretaceous continental pyroclastic rocks;②grid fault structural system;③caldera and volcanic basin;④Fe-Mn carbonation,silicification,pyrophrllitization,pyritiza-tion,Pb-Zn mineralization;⑤Ag-Pb-Zn-Cu-Au element anomaly combinations;⑥annular stable negative mag-netic anomaly;and⑦low resistance and high induced polarization anomaly.Through the study on the geological characteristics and prospecting indicators of the Fuxingtun deposit,this paper aims to provide prospecting ideas for similar deposits in the Da Hinggan Mountains and also provide an effective exploration model for finding con-cealed ore bodies in this area.关键词
地质特征/找矿标志/银铅锌矿床/复兴屯/大兴安岭南段Key words
geological characteristics/prospecting indicators/Ag-Pb-Zn deposit/Fuxingtun/southern Da Hinggan Mountains分类
天文与地球科学引用本文复制引用
李海军,周立军,张善明,梁新强,胡二红,郝智慧,王亚楠,武斌,康建飞,白涛..内蒙古复兴屯超大型银铅锌矿床地质特征及找矿标志[J].矿床地质,2023,42(6):1175-1194,20.基金项目
本文得到内蒙古自治区地质勘查基金管理中心项目(编号:11-1-KC11)资助 （编号:11-1-KC11）
