| 孙希文,边千韬,王作琦.赞比亚中央省瑞娜铜矿区碳酸岩及其与成矿的关系[J].矿产勘查,2013,4(1):82-91 |
| 赞比亚中央省瑞娜铜矿区碳酸岩及其与成矿的关系 |
| Relationship between magmatic carbonatite and copper mineralization in the Ruina copper ore field, central province of Zambia |
| 投稿时间：2012-08-28 |
| DOI： |
| 中文关键词: 赞比亚 碳酸岩 瑞娜铜矿区 |
| 英文关键词: Zambia carbonatite Ruina Cu ore field |
| 基金项目:国土资源部海外风险勘探基金项目(编号:201130B00100102)资助。 |
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| 中文摘要: |
| 通过对赞比亚中央省瑞娜铜矿区钻孔岩芯的系统研究,作者认为该区的含矿围岩为典型的火成碳酸岩,详细的岩矿相学研究也揭示瑞娜铜矿为碳酸岩岩浆型铜矿床。岩浆发生液态不混溶作用,溶离出碱性硅酸盐熔体、金属硫化物熔体和挥发份(CO2、H2O、F、Cl、B、P等)等流体,岩浆所携带的碱质使接触带地层交代蚀变成霓长岩,挥发份以络合物的形式携带部分Cu、Au、Ag、Ga、Co、REE、Ni等金属元素在外接触带地层碎裂岩和内接触带处成矿。 |
| 英文摘要: |
| Through the systematic observation of drill core samples collected from Ruina copper ore field in central province of Zambia, the authors conclude that the copper-bearing country rock is a typical carbonatite with magnetic origin. The detailed study of mineral assemblages and petrographical characteristics also indicate that the Ruina copper deposit is a magmatic carbonatite-type cooper mineralization. When the magma evolved into the immiscible stage, the alkali-containing silicate melt, sulfides melt and volatile components (including CO2, H2O, F, Cl, B, P)are dissolved. The alkali compositions accompanying the magma reacted with the contact host rock, then the fenite was formed; and the volatile components which contain mineralization elements such as Cu, Au, Ag, Ga, Co, REE and Ni in the form of chemical complex deposited in the fractures of host rocks within the outlier contact zone as well as inner contact zone. The result of this study will be useful and meaningful for mineral prospecting in this region. |
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