| 豫西南赤土店铅锌矿床地质、流体包裹体和S、Pb同位素地球化学特征 |
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| 引用本文： | 段士刚,薛春纪,冯启伟,高炳宇,刘国印,燕长海,宋要武.豫西南赤土店铅锌矿床地质、流体包裹体和S、Pb同位素地球化学特征[J].中国地质,2011,38(2):427-441. |
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| 作者姓名： | 段士刚 薛春纪 冯启伟 高炳宇 刘国印 燕长海 宋要武 |
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| 作者单位： | 1. 地质过程与矿产资源国家重点实验室,中国地质大学(北京)地球科学与资源学院,北京,100083
2. 河南省地质调查院,河南,郑州,450007 |
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| 基金项目： | 地质过程与矿产资源国家重点实验室开放基金，中央高校基本科研业务费专项资，高等学校学科创新引智计划，长江学者和创新团队发展计划，国家自然科学基金 |
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| 摘 要： | 豫西南栾川地区近年铅锌矿勘查取得显著进展,显示出良好的资源前景。赤土店铅锌矿床是新发现的铅锌矿之一,从控矿要素和矿体产状看,有两种矿化类型,即北西西向断裂构造控制的脉状铅锌矿,和石宝沟岩体外围矽卡岩带中的铅锌矿,并以前者为主。在空间上围绕斑岩体往外,构成近斑岩体发育矽卡岩型钼矿化,远斑岩体接触带的围岩矽卡岩中发育矽卡岩型多金属矿床,在斑岩体外围的断裂带中发育脉型铅锌银矿床的空间分布或分带规律。流体包裹体研究显示,成矿阶段温度较高(290～340℃),流体含大量CO2,并发生过流体不混溶分离。S同位素组成(0.20‰～8.30‰,平均3.93‰)显示,硫有深部岩浆(区内斑岩硫集中在2‰～4‰)和地层(分别集中在-13‰～-8‰和6‰～11‰两个区间)两种来源。被矿相学研究证实共生的方铅矿-闪锌矿矿物对计算出平衡温度为388.29℃,亦显示高温特征。Pb同位素组成(206Pb/204Pb=17.005～l7.953,207Pb/204Pb=15.414～15.587,208Pb/204Pb=37.948～39.03)反映,脉状铅锌矿成矿物质可能主要来自斑岩,部分来自地层。综合分析认为,赤土店矿床为与燕山期斑岩有关的铅锌矿,其脉状矿体为岩浆热液充填-交代成因类型。
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| 关 键 词： | 流体包裹体 S、Pb同位素 铅锌矿床 岩浆热液充填-交代矿床 赤土店 河南栾川 |
Geology,fluid inclusions and S,Pb isotopic geochemistry of the Chitudian Pb-Zn deposit in Luanchuan,Henan Province |
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| DUAN Shi-gang,XUE Chun-ji,FENG Qi-wei,GAO Bing-yu,LIU Guo-yin,YAN Chang-hai,SONG Yao-wu.Geology,fluid inclusions and S,Pb isotopic geochemistry of the Chitudian Pb-Zn deposit in Luanchuan,Henan Province[J].Chinese Geology,2011,38(2):427-441. |
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| Authors: | DUAN Shi-gang XUE Chun-ji FENG Qi-wei GAO Bing-yu LIU Guo-yin YAN Chang-hai SONG Yao-wu |
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| Institution: | DUAN Shi-gang1,XUE Chun-ji1,FENG Qi-wei1,GAO Bing-yu1,LIU Guo-yin2,YAN Chang-hai2,SONG Yao-wu2 (1.State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,Beijing 100083,China,2.Henan Institute of Geological Survey,Zhengzhou 450007,Henan,China) |
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| Abstract: | Numerous Pb-Zn ore veins were recently found in Luanchuan area,southwestern Henan Province.These veins host enormously huge resources of Pb and Zn.The Chitudian ore deposit is one of these newly-discovered Pb-Zn deposits.Its Pb-Zn ore veins are controlled mainly by WNW-trending fractures.Apart from Pb-Zn ore veins,skarn with Pb-Zn mineralization was also discovered recently in the ore deposit,but the economic value is lower than that of the ore veins.Considering that weak Mo mineralization occurs in skarn c... |
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| Keywords: | fluid inclusion S and Pb stable isotopes lead and zinc deposit magmatic hydrothermal filling-metasomatic deposit Chitudian Luanchuan |
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