DOI:10.3969/j.issn.1003-0972.2023.03.017文章编号:1003-0972(2023)03-0445-06河南银洞坡金矿黄铁矿微量元素特征及对矿床成因的指示意义唐相伟1,杨文涛2,严育通3,郭跃闪1,张洋1,杨柳4*(1.河南省地质矿产勘查开发局第三地质矿产调查院,河南郑州450000;2.河南理工大学资源环境学院,河南焦作454000;3.信阳师范大学地理科学学院,河南信阳464000;4.湖南工程职业技术学院自然资源学院,湖南长沙410151)摘要:以银洞坡金矿床中黄铁矿为研究对象,利用激光剥蚀电感耦合等离子体质谱仪(LA-ICP-MS)对黄铁矿微量元素开展原位微区分析,探讨其矿床成因。根据野外和室内观察结果,银洞坡金矿中黄铁矿主要划分为3个世代。黄铁矿微量元素表明,Py1为沉积成因黄铁矿,与金形成无关;Py2、Py3具岩浆热液成因黄铁矿特征,为成矿期黄铁矿。结合区域矿床地质,银洞坡金矿为岩浆热液型矿床。关键词:LA-ICP-MS;黄铁矿;矿床成因;银洞坡金矿中图分类号:Q601文献标识码:A开放科学(资源服务)标识码(OSID):CharacteristicsofTraceElementsinPyriteandTheirImplicationsfortheGenesisofYindongpoGoldDepositinHenanProvinceTANGXiangwei1,YANGWentao2,YANYutong3,GUOYueshan1,ZHANGYang1,YANGLiu4*(1.No.3InstituteofGeological&MineralResourcesSurveyofHenanGeologicalBureau,Zhengzhou450000,China;2.HenanPolytechnicUniversity,InstituteofResourcesandEnvironment,Jiaozuo454000,China;3.CollegeofGeographicSciences,XinyangNormalUniversity,Xinyang464000,China;4.DepartmentofNaturalResources,HunanVocationalCollegeofEngineering,Changsha410151,China)Abstract:ThelaserablationinductivelycoupledplasmamassspectrometryisadoptedtoanalysethetraceelementsofpyriteandinvestigatethegenesisoftheYindongpodeposit.Baseonthefieldandmicroscopicobservation,thepyritesintheYindongpodepositcouldbedividedintothreegenerations.ThetraceelementsofpyritesindicatethatPy1issedimentaryorigin,unrelatedtogoldmineralization;Py2andPy3arethedominatedpyritetypes,whichisofmagmaticsource.Combinedwiththeregionalgeology,theYindongpodepositbelongstomagmatichydrothermaldeposit.Keywords:LA-ICP-MS;pyrite;genesisofthedeposit;Yindongpogolddeposit0引言河南省桐柏县围山城矿集区位于秦岭造山带东延部分,是我国重要金银铅锌等多金属矿集区之一。矿集区已探明主要矿...
