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  

Characteristics of Trace Elements in Pyrite and Their Implications for the Genesis of Yindongpo Gold Deposit in Henan Province

作　　者：唐相伟[1] 杨文涛[2] 严育通 郭跃闪 张洋[1] 杨柳[4] TANG Xiangwei;YANG Wentao;YAN Yutong;GUO Yueshan;ZHANG Yang;YANG Liu(No.3 Institute of Geological&Mineral Resources Survey of Henan Geological Bureau,Zhengzhou 450000,China;Henan Polytechnic University,Institute of Resources and Environment,Jiaozuo 454000,China;College of Geographic Sciences,Xinyang Normal University,Xinyang 464000,China;Department of Natural Resources,Hunan Vocational College of Engineering,Changsha 410151,China)

机构地区：[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

出　　处：《信阳师范学院学报（自然科学版）》2023年第3期445-450,共6页Journal of Xinyang Normal University(Natural Science Edition)

基　　金：国家重点研发计划课题(2022YFC2903605);中国地质调查局发展研究中心“全国重要矿集区找矿预测二级项目”子项目(DD2016005237,DD2019057003,DD20190570-2020-02);河南省地质矿产勘查开发局青年科技创新项目;河南省财政地质勘查项目。

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。The laser ablation inductively coupled plasma mass spectrometry is adopted to analyse the trace elements of pyrite and investigate the genesis of the Yindongpo deposit.Base on the field and microscopic observation,the pyrites in the Yindongpo deposit could be divided into three generations.The trace elements of pyrites indicate that Py1 is sedimentary origin,unrelated to gold mineralization;Py2 and Py3 are the dominated pyrite types,which is of magmatic source.Combined with the regional geology,the Yindongpo deposit belongs to magmatic hydrothermal deposit.

关 键 词：LA-ICP-MS 黄铁矿 矿床成因 银洞坡金矿 

分 类 号：Q601[生物学—生物物理学]