| 对小秦岭小河岩体南缘董家埝银矿地质特征及成因的初步认识 |
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| 引用本文： | 马晓熙,卫建征,周勉,赵征,李勋.对小秦岭小河岩体南缘董家埝银矿地质特征及成因的初步认识[J].资源环境与工程,2019,33(1):37-41,65. |
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| 作者姓名： | 马晓熙 卫建征 周勉 赵征 李勋 |
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| 作者单位： | 河南省地矿局 第二地质矿产调查院,河南 郑州,450001;浙江省测绘大队,浙江 杭州,310030;河南省地矿局 第四地质矿产调查院,河南 郑州,450000;河南省地矿局 第四地质勘查院,河南 郑州,450000 |
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| 摘 要： | 董家埝银矿是近年来在豫西小秦岭地区小河岩体南缘发现的一个银矿床。矿(化)体产出于太古代太华群或中元古代管道口群与中元古代小河花岗岩体接触带,矿体呈陡倾斜较规则脉状产出,具分枝复合现象。综合其地质背景、矿床地质特征以及区域典型矿床类比研究表明:其矿床类型为热液脉状银矿床,对比相似矿床推测其矿床成因与中生代岩浆活动密切相关,成矿年代为晚中生代。矿石中Ag、Pb、Zn多金属共生,Ag/Au比值很高,不出现Au的富集,Pb/Zn比值>1,是一个以银为主,伴生铅、锌的矿点。构造破碎带、铅锌矿化、烟灰色硅化、绢云母化等矿化蚀变、民采坑以及银铅锌元素异常组合是其重要的找矿标志。为矿区及其小河岩体南缘进一步找矿提供了指导方向。
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| 关 键 词： | 银矿 地质特征及成因 找矿标志 小秦岭地区小河岩体南缘 |
Dongjianian Silver Deposit in the Southern Margin ofXiaohe Rock Mass,Xiaoqinling Mountains |
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| Ma Xiaoxi,Wei Jianzheng,Zhou Mian,Zhao Zheng,Li Xun.Dongjianian Silver Deposit in the Southern Margin ofXiaohe Rock Mass,Xiaoqinling Mountains[J].Resources Environment & Engineering,2019,33(1):37-41,65. |
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| Authors: | Ma Xiaoxi Wei Jianzheng Zhou Mian Zhao Zheng Li Xun |
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| Affiliation: | (No.2 Institute of Geological & Mineral Resources Survey of Henan,Zhengzhou,Henan 450001;The Institution of Geological Surveying and Mapping,Zhejiang Province,Hanzhou,Zhejiang 310030;No.4 Institute of Geological & Mineral Resources Survey of Henan,Zhengzhou,Henan 450000;The Fourth Geological Exploration Institute of Henan Geology and Minearl Bureau,Zhengzhou,Henan 450000) |
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| Abstract: | Ma Xiaoxi;Wei Jianzheng;Zhou Mian;Zhao Zheng;Li Xun(No.2 Institute of Geological & Mineral Resources Survey of Henan,Zhengzhou,Henan 450001;The Institution of Geological Surveying and Mapping,Zhejiang Province,Hanzhou,Zhejiang 310030;No.4 Institute of Geological & Mineral Resources Survey of Henan,Zhengzhou,Henan 450000;The Fourth Geological Exploration Institute of Henan Geology and Minearl Bureau,Zhengzhou,Henan 450000) |
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| Keywords: | silver deposit geological characteristics and genesis prospecting criteria southern margin of Xiaohe rock mass in Xiaoqinling area |
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