| 朱永刚.博茨瓦纳莫能锰矿床地质特征及成因[J].地质与勘探,2013,49(4):777-783 |
| 博茨瓦纳莫能锰矿床地质特征及成因 |
| Geological Features and Genesis of the Moeng Manganese Ore Deposit in Botswana |
| 投稿时间：2013-02-16 修订日期：2013-03-26 |
| DOI： |
| 中文关键词: 博茨瓦纳 莫能锰矿 地质特征 岩相古地理 成因模式 |
| 英文关键词: Botswana, Moeng manganese deposit, geological features, lithofacies palaeogeography, genetic model |
| 基金项目:2010年度国外矿产资源风险勘查项目（编号：10145A031）资助 |
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| 中文摘要: |
| [摘 要] 莫能锰矿为元古代形成的与含铁建造密切相关的锰矿床。本文系统总结了区域地质背景、锰矿床地质特征，并对含锰地层的岩相古地理进行了分析，认为含矿岩系为滨外浅海陆棚沉积。在此基础上，初步建立了矿床的成因模式，提出矿床成因属浅海沉积变质型的观点。与世界上最大的锰矿田卡拉哈里锰矿田进行对比后，认为它们在成矿背景、成矿时代、矿床特征、岩相古地理条件及后生改造等方面均有相似之处，莫能锰矿具有成为大型锰矿床的找矿潜力。 |
| 英文摘要: |
| Abstract: The Moeng manganese ore deposit in Botswana, formed in Proterozoic Era, is closely associated with iron-bearing formation. Based on the regional geological background and geological features, this paper analyses the lithofacies palaeogeography of this area, and suggests that this manganese ore deposit was formed in a continental shelf deposit environment. Accordingly, a genetic model is established for this ore deposit, and a view of point is proposed that it is a neritic sedimentary metamorphic manganese deposit. The comparison between the Moeng manganese ore deposit and the Kalahari manganese ore field, the largest in the world, shows that these two manganese ore deposits have similarities in metallogenic background, metallogenic age, ore deposit features, lithofacies palaeogeography, and epigenetic modification. It is thus concluded that the Moeng manganese deposit has a potential of search for manganese ore to become a large-scale mine. |
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