| 庐江沙溪斑岩型铜金矿床绿泥石的地球化学特征及找矿指示 |
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| 引用本文： | 何光辉,周涛发,范裕,王世伟,肖庆玲.庐江沙溪斑岩型铜金矿床绿泥石的地球化学特征及找矿指示[J].矿床地质,2018,37(6):1247-1259. |
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| 作者姓名： | 何光辉 周涛发 范裕 王世伟 肖庆玲 |
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| 作者单位： | 合肥工业大学资源与环境工程学院, 安徽 合肥 230009,合肥工业大学资源与环境工程学院, 安徽 合肥 230009,合肥工业大学资源与环境工程学院, 安徽 合肥 230009,合肥工业大学资源与环境工程学院, 安徽 合肥 230009,合肥工业大学资源与环境工程学院, 安徽 合肥 230009 |
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| 基金项目： | 国家重点研发计划“长江中下游、钦杭成矿带典型成矿系统的深部过程与时空演化”（编号：112-4131000091）的资助 |
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| 摘 要： | 文章在前人对岛弧环境斑岩型矿床绿泥石主微量元素找矿指示研究的基础上,以陆内环境的长江中下游成矿带中的沙溪斑岩型铜金矿床为对象,利用LA-ICP-MS技术对沙溪斑岩型铜金矿床中绿泥石进行了主微量元素研究。结果显示,绿泥石中Ti、Ba、Co、K、Pb、Sr、Fe、V/Ni靠近矿化中心的位置含量高,Mn、Mg元素远离矿化中心的位置含量高。沙溪斑岩型铜金矿床中绿泥石元素含量分布主要受温度、被交代矿物、流体pH值和氧化还原环境、围岩性质影响。受交代矿物的影响,绿泥石中的有些元素(Si、Na、Mg、K、Al)的含量高低不能直接对矿化中心进行指示,但沙溪斑岩型铜金矿床绿泥石部分元素(Ti、Ba、Co、Pb、Sr、Fe)和元素比值(V/Ni)具有指示矿化中心的作用。
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| 关 键 词： | 地球化学 绿泥石 LA-ICP-MS原位分析 微量元素特征 找矿指示 沙溪斑岩型铜金矿床 |
| 收稿时间： | 2018/6/20 0:00:00 |
| 修稿时间： | 2018/10/15 0:00:00 |
Geochemical characteristics and exploration implications of chlorite in Shaxi porphyry copper gold deposit, Lujiang |
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| HE GuangHui,ZHOU TaoF,FAN Yu,WANG ShiWei and XIAO QingLing.Geochemical characteristics and exploration implications of chlorite in Shaxi porphyry copper gold deposit, Lujiang[J].Mineral Deposits,2018,37(6):1247-1259. |
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| Authors: | HE GuangHui ZHOU TaoF FAN Yu WANG ShiWei and XIAO QingLing |
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| Institution: | School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, Anhui, China,School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, Anhui, China,School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, Anhui, China,School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, Anhui, China and School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, Anhui, China |
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| Abstract: | Based on previous studies of the indicators of major and trace elements of chlorite in porphyry deposits in the island arc environment, the authors chose the Shaxi porphyry copper deposit in the Middle Lower Yangtze Metallogenic Belt in the intracontinental environment as the study object. The major and trace elements of chlorite in the Shaxi porphyry deposit were studied by LA-ICP-MS. The results show that, close to mineralization center, chlorite contains high content of Ti, Ba, Co, K, Pb, Sr, Fe, Ti/Sr and V/Ni, while the content of Mn and Mg is high far away from the mineralization center. The element content of chlorite in Shaxi deposit is mainly affected by temperature, altered minerals, fluid pH, redox conditions and surrounding rocks. Influenced by the altered minerals, some elements of chlorite (such as Si, Na, Mg, K and Al) cannot directly indicate the mineralization center, but some elements (such as Ti, Ba, Co, Pb, Sr and Fe) and element ratios (V/Ni) of chlorite in Shaxi porphyry copper deposit can effectively indicate the mineralization center. |
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| Keywords: | geochemistry chlorite LA-ICP-MS in situ analysis trace element characteristics exploration implication Shaxi deposit |
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