| 津巴布韦北东部Mutawatawa地区Chelsea East金矿床地质特征及成矿模式 |
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| 引用本文： | 闫红圃.津巴布韦北东部Mutawatawa地区Chelsea East金矿床地质特征及成矿模式[J].地质与勘探,2015,51(3):579-586. |
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| 作者姓名： | 闫红圃 |
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| 作者单位： | 河南省地质调查院,河南郑州,450001 |
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| 基金项目： | 国外矿产资源风险勘查基金项目（编号：财建[2005]897号）资助 |
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| 摘 要： | Chelsea East金矿床位于津巴布韦北东部Dindi绿岩带之上,该区域是津巴布韦重要的贵金属和稀有金属矿产聚集区之一,其金矿勘查开发潜力巨大。矿床共圈定3个金矿体和8个贫金矿体,矿体一般呈似层状、脉状或透镜体状产出,主要位于新太古代Bulawayo群Ar3Yum组中,主要控矿构造为北西西—南东东向脆-韧性剪切构造带和脆性断层,矿体主要由含金构造蚀变岩组成,其次为石英脉等。本文在综合分析矿床地质特征、成矿控制因素和物理化学条件的基础之上,初步建立了矿床成矿模式。该矿床的形成至少表现为两阶段成矿,即早期的区域动力变质变形阶段和后期的区域构造岩浆活动阶段。
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| 关 键 词： | 地质特征 控矿因素 成矿模式 Chelsea East金矿床 津巴布韦 |
| 收稿时间： | 2014/2/22 0:00:00 |
| 修稿时间： | 1/5/2015 12:00:00 AM |
Geological characteristics and a metallogenic model for the Chelsea East Au deposit in the Mutawatawa area, northeast Zimbabwe |
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| Yan Hong-pu.Geological characteristics and a metallogenic model for the Chelsea East Au deposit in the Mutawatawa area, northeast Zimbabwe[J].Geology and Prospecting,2015,51(3):579-586. |
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| Authors: | Yan Hong-pu |
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| Institution: | Henan Institute of Geological Survey, Zhengzhou, Henan |
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| Abstract: | The Chelsea East Au deposit lies in the Dindi greenstone belt of the northeastern Zimbabwe, which is one of the important mineral clustering areas with precious and rare metals and has great gold exploration potential. The deposit has 3 gold orebodies and 8 poorly mineralized gold orebodies. These orebodies occur as stratified, stratoid or lens beds, which are mainly hosted in the Neoarchean Ar3Yum Formation of the Bulawayo Group, consisting of structural altered rock and quartz vein types. The main ore-controlling structures are NWW-SEE trending brittle-ductile shear zones or brittle faults. Based on geological characteristics, ore-controlling factors, physics and chemistry conditions of the deposit, a preliminary metallogenic model was established. This model suggests that the formation of the ore deposits had at least two stages of mineralizations, which are the early regional dynamic metamorphism deformation stage and later regional tectonic magmatic activity stage. |
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| Keywords: | geological characteristic ore-controlling factor metallogenic model Chelsea East Au deposit Zimbabwe |
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