| 巴布亚新几内亚奥克泰迪铜金矿床成矿特征和控制因素 |
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| 引用本文： | 信迪,刘京,李雷,冉丽,宋学信.巴布亚新几内亚奥克泰迪铜金矿床成矿特征和控制因素[J].中国区域地质,2014(2):299-307. |
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| 作者姓名： | 信迪 刘京 李雷 冉丽 宋学信 |
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| 作者单位： | 中矿资源勘探股份有限公司,北京100089 |
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| 基金项目： | 资助项目：中央地勘基金项目（编号：201130D06200123）致谢：南京地质调查中心姚仲友教授级高级工程师、王天刚博士及中矿资源勘探股份有限公司李文光工程师参加了奥克泰迪铜金矿床野外地质考察,巴布亚新几内亚矿产资源局（MRA）时任地调部长Leonard CranfiMd在野外考察过程中给予热情的帮助,文中部分插图由中矿资源勘探股份有限公司郭江涛博士和祝魏涛先生清绘,在此一并表示感谢. |
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| 摘 要： | 巴布亚新几内亚西部Fubilan山奥克泰迪矿床是一个世界级铜金矿床，在大地构造上位于新几内亚造山带的巴布亚褶皱带。该矿床的铜金矿化赋存于Fubilan二长斑岩及其周边的磁铁矿夕卡岩和硫化物夕卡岩中。矿石类型以原生硫化物矿石为主，金属矿物包括磁铁矿、黄铁矿、磁黄铁矿、白铁矿、黄铜矿、斑铜矿等。蚀变类型包括夕卡岩化、钾化、泥化和青盘岩化。矿床氧化次生富集带发育，表生矿石矿物为蓝辉铜矿、辉铜矿、自然铜、铜蓝和银金矿。成矿作用主要受区域构造、侵入杂岩体、Darai组灰岩地层、断裂等因素的控制。根据矿床的主岩、矿石特征、蚀变特征和控矿因素，认为该矿床成因类型属于较为典型的夕卡岩一斑岩型矿床。
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| 关 键 词： | 奥克泰迪铜金矿床 成矿特征 成矿控制因素 夕卡岩 斑岩铜矿 巴布亚新几内亚 |
Metallogenic characteristics and controlling factors of the Ok Tedi Cu-Au deposit,Papua New Guinea. |
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| XIN Di,LIU Jing,LI Lei,RAN Li,SONG Xue-xin.Metallogenic characteristics and controlling factors of the Ok Tedi Cu-Au deposit,Papua New Guinea.[J].Regional Geology of China,2014(2):299-307. |
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| Authors: | XIN Di LIU Jing LI Lei RAN Li SONG Xue-xin |
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| Institution: | Sinomine Resource Exploration Co. Ltd., Beijing 100089, China |
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| Abstract: | Lying in Mt Fubilan of West Papua New Guinea, the Ok Tedi deposit is a world class copper-gold deposit. Tectonically, it belongs to the Papua fold belt of the New Guinea Orogenic belt. Copper-gold mineralization of the deposit occurs in the Fubilan monzonite porphyry, and its surrounding magnetite skarn and sulfide skarn. The primary sulfide ores which are composed of such minerals as magnetite, pyrite, pyrrhotite, marcasite, chalcopyrite and chalcocite constitute the predominant ore type. There exists a secondary oxidation-secondary enrichment zone in the deposit. The alteration types include skarnization, potassic alteration, argillic alteration and propylitic alteration. The supergene ore minerals include digenite, chalcocite, native copper, covellite and electrum. Mineralization is mainly controlled by regional structures, intrusive complex, limestones of the Darai Formation and faults. According to the features of host rock, ore and alteration as well as the controlling factors of mineralization, the authors classify the Ok Tedi deposit as a typical skarn-porphyry Cu-Au deposit. |
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| Keywords: | Ok Tedi copper-gold deposit characteristics of mineralization controlling factors of mineralization skarn porphyry copper deposit Papua New Guinea |
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