| 左立波,任军平,邱京卫,刘晓阳,孙凯,王杰,许康康,龚鹏辉.纳米比亚罗辛铀矿床地质特征、地球化学特征及成矿模式[J].地质找矿论丛,2015,30(S1):137-145,180 |
| 纳米比亚罗辛铀矿床地质特征、地球化学特征及成矿模式 |
| Geological and geochemical characteristics and metallogenic model of the Rssing uranium deposit in Namibia |
| 投稿时间：2015-10-08 |
| DOI：10.6053/j.issn.1001-1412.2015.S1.017 |
| 中文关键词: 罗辛铀矿 白岗岩 矿床成因 达马拉造山带 纳米比亚 |
| 英文关键词:the Rössing uranium deposit alaskite ore genesis Damara orogen Namibia |
| 基金项目:中国地质调查局项目"非洲中南部重要矿床地质背景、成矿作用和找矿潜力研究"(编号:1212011220910)及国外风险勘查基金项目(编号:科[2011]D3-04)资助。 |
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| 中文摘要: |
| 白岗岩型铀矿是一种非常重要的岩浆型矿床,主要产于纳米比亚。罗辛铀矿是白岗岩型铀矿的典型矿床,该矿床目前仍是全球铀资源的主要提供者之一。文章对前人研究成果进行分析总结,概括了罗辛铀矿的区域地质背景和岩石地层系统,分析了铀矿床地质特征及矿床成因。研究认为:罗辛铀矿床形成时间为(508±2)Ma;铀的赋存以独立铀矿物为主,少量以类质同像形式存在于钍矿物中;含铀白岗岩相对富集大离子亲石元素Rb,K,Th,U和Pb,而相对亏损Ba,Nb,Sr,P和Ti;穹窿构造为岩体侵位成矿提供了空间,而岩浆的重熔结晶作用使得铀进入岩浆,并在局部富集成矿。 |
| 英文摘要: |
| The alaskite-type uranium deposit is the most important magma-type deposit in Namibia. The Rssing uranium deposit is the typical representative of this type of deposit and one of the main providers of the world's uranium resources. The authors analyze a lot of previous research results, and summarize the regional geological background, lithostratigraphy and the geological characteristics and genesis of the deposits. The results show that the Rssing uranium deposit was formed at (508±2) Ma; the uranium mainly occur as independent uranium minerals, rarely in isomorph in thorium minerals. The alaskite is relatively concentrated in large ion lithophile elements Rb, K, Th, U, Pb, Ba, Nb and depleted in Nb, Sr, P, Ti. The dome structure provides the space for emplacement and mineralization, and the remelting crystallization of magma brought uranium into the magma and uranium enriched locally. |
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