| 范飞鹏,肖惠良,陈乐柱,李海立,刘建雄,邓中林,李少斌,林梗伟,周霞.粤东新寮岽铜多金属矿区钻孔深部矿体铜同位素研究[J].岩矿测试,2017,36(4):420-429 |
| FAN Fei-peng,XIAO Hui-liang,CHEN Le-zhu,LI Hai-li,LIU Jian-xiong,DENG Zhong-lin,LI Shao-bin,LIN Geng-wei,ZHOU Xia.Copper Isotope Studies of a Deep Ore Body in the Xinliaodong Copper-Polymetallic Deposit, Eastern Guangdong Province[J].Rock and Mineral Analysis,2017,36(4):420-429.DOI:10.15898/j.cnki.11-2131/td.201609010133 |
| 粤东新寮岽铜多金属矿区钻孔深部矿体铜同位素研究 |
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| Copper Isotope Studies of a Deep Ore Body in the Xinliaodong Copper-Polymetallic Deposit, Eastern Guangdong Province |
| 投稿时间：2016-09-01 修订日期：2017-03-20 |
| DOI：10.15898/j.cnki.11-2131/td.201609010133 |
| 中文关键词: 铜同位素 粤东 新寮岽铜多金属矿区 铜矿体 岩浆 |
| 英文关键词: copper isotope Eastern Guangdong Province Xinliaodong copper-polymetallic ore district copper orebody magma |
| 基金项目:中国地质调查局广东厚婆坳铜锡多金属矿整装勘查区专项填图与技术应用示范之找矿预测模型构建与找矿预测研究专题（12120114015701）；武夷山成矿带龙泉-上杭地区地质矿产调查（DD20160037） |
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| 中文摘要: |
| 新寮岽铜多金属矿床是近年来粤东地区新发现的铜多金属矿床之一，矿区位于东南沿海锡、钨、铜等重要矿产发育地区，成矿地质条件非常好。本文通过对矿体中黄铜矿的铜同位素研究表明，其δ65Cu值（-0.34‰~+1.37‰）与斑岩型矿床的δ65Cu值基本一致，成矿物质Cu主要来源于深部岩浆，成矿流体显示为中高温（250~420℃）岩浆热液特征，Cu的分馏与岩浆热液活动关系密切，矿体的形成与成矿流体出溶有关。铜同位素组成随深度增加有增高趋势，能形成规模矿体。同时，铜同位素可以直接指示热源的位置，在热液流体石英脉出现的区域，铜矿体δ65Cu值都低于0，在热液接触带、特殊的赋矿围岩和构造作用部位铜同位素值较高，预示着主矿体的边缘或前锋，是最为明显的找矿标志。 |
| 英文摘要: |
| The Xinliaodong copper-polymetallic deposit of Eastern Guangdong Province is one of newly discovered deposits. The ore district belongs to tin, tungsten, and copper ore cluster in the southeast coast, which have a very good ore-forming geological conditions. Chalcopyrite has δ65Cu value ranging from-0.34‰ to +1.37‰, which is consistent with δ65Cu value of porphyry deposits, indicating that ore-forming material Cu was derived from deep magma and ore-forming fluids were medium-high-temperature (250-420℃) magmatic-hydrothermal fluids. There is a close relationship between the fractionation of Cu isotope and magmatic hydrothermal activity. The formation of ore body is related to the dissolution of ore-forming fluids. With the increase of depth, there is atrend of increasing δ65Cu value, indicating a potential of a largee orebody. Copper isotope can directly indicate the location of the heat source. The δ65Cu values are below 0 for copper ore bodies close to the hydrothermal quartz veins.But the copper isotope values are higher in the hydrothermal contact zone, special ore-bearing surrounding rock and tectonic zone where indicates the edge or the front of the main ore body, most obvious ore prospecting mark. |
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