| 内蒙古敖仑花斑岩铜钼矿床花岗岩类地质地球化学特征 |
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| 引用本文： | 邹滔,王京彬,王玉往,袁继明,林龙军,窦金龙.内蒙古敖仑花斑岩铜钼矿床花岗岩类地质地球化学特征[J].地质学报,2011,85(2). |
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| 作者姓名： | 邹滔 王京彬 王玉往 袁继明 林龙军 窦金龙 |
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| 作者单位： | 邹滔,ZOU Tao(昆明理工大学国土资源工程学院,昆明,650093;北京矿产地质研究院,北京,100012);王京彬,王玉往,WANG Jingbin,WANG Yuwang(北京矿产地质研究院,北京,100012;有色金属矿产地质调查中心,北京,100012);袁继明,林龙军,窦金龙,YUAN Jiming,LIN Longjun,Dou Jinlong(有色金属矿产地质调查中心,北京,100012) |
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| 基金项目： | 国家重点基础研究发展计划"973"项目(编号2007CB411304;2002CB409806)资助成果 |
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| 摘 要： | 敖仑花斑岩铜钼矿床位于大兴安岭南段西拉木伦河断裂北侧,矿床赋存于花岗闪长斑岩岩体及长英质角岩中.矿区脉岩发育,多形成于花岗闪长斑岩体及成矿之后.岩石地球化学表明,赋矿斑岩具有高Si、富Al、Na,低Ca、Mg和Fe2OT3,A/CNK值小于1.1等特征,为偏钠质的高钾钙碱性Ⅰ型花岗岩;稀土元素具微弱负Eu异常,轻重稀土分异比较明显,LREE/HREE值在11.43～18.33,LaN/YbN值在14.64～37.55;岩石具高Sr(＞400×10-6),低Y(≤18×10-6)和Yb(≤1.9×10-6),显示出典型的埃达克岩特征.矿区后期的脉岩中,流纹斑岩与赋矿斑岩的地球化学特征差别较大,具有低Sr,高Y和Yb,明显的负Eu异常等特征,反映其构造背景为张性环境;英安斑岩具有弱的负Eu异常,轻重稀土分异度高于流纹斑岩,但略低于花岗闪长斑岩.通过分析矿区花岗岩岩类的地球化学特征及形成构造环境,认为敖仑花铜钼矿床具有有利的成矿条件和很大的找矿潜力.
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| 关 键 词： | 赋矿斑岩 埃达克岩 构造背景 敖仑花铜钼矿 内蒙古 |
Geochemical Characteristics of the Granitic Rocks in the Aolunhua Porphyre Copper-Molybdenum Deposit,Inner Mongolia |
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| ZOU Tao,WANG Jingbin,WANG Yuwang,YUAN Jiming,LIN Longjun,Dou Jinlong.Geochemical Characteristics of the Granitic Rocks in the Aolunhua Porphyre Copper-Molybdenum Deposit,Inner Mongolia[J].Acta Geologica Sinica,2011,85(2). |
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| Authors: | ZOU Tao WANG Jingbin WANG Yuwang YUAN Jiming LIN Longjun Dou Jinlong |
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| Institution: | ZOU Tao1,2),WANG Jingbin2,3),WANG Yuwang2,YUAN Jiming3),LIN Longjun3),Dou Jinlong3)1)Faculty of Land Resource Engineering,Kunming University of Science and Technology,Kunming,650093,2)Beijing Institute of Geology for Mineral Resources,Beijing,100012,3)China Non-ferrous Metal Resources Geological Survey |
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| Abstract: | The Aolunhua porphyry copper-molybdenum deposit is located in the north of the Xilamulun flault in the southern area of Da Hinggan Mts.The deposit occurs in the granodiorite-porphyry and felsic hornfels.The dikes in the ore district are very developed and formed later than the granodiorite-porphyry and copper-molybdenum mineralization.Lithogeochemical analysis shows that the host granodiorite-porphyry are rich in Si,Al and Na,poor in Ca,Mg and Fe2OT3,with A/CNK ratio lower than 1.1,suggesting a type-I grani... |
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| Keywords: | ore-bearing porphyry adakite tectonic setting Aolunhua copper-molybdenum deposit Inner Mongolia |
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