| 刘洪微.刚果（金）KOLWEZI铜钴矿床地质特征及成因分析[J].地质与勘探,2018,54(4):856-866 |
| 刚果（金）KOLWEZI铜钴矿床地质特征及成因分析 |
| Geological characteristics and genesis of the Kolwezi Cu-Co deposit in Democratic Republic of Congo |
| 投稿时间：2017-08-14 修订日期：2018-05-28 |
| DOI：10.12134/j.dzykt.2018.04.019 |
| 中文关键词: KOLWEZI铜钴矿床 地质特征 矿床成因 刚果（金） |
| 英文关键词: Kolwezi Cu-Co deposit, geological characteristics, deposit genesis, Democratic Republic of Congo |
| 基金项目: |
|
| 摘要点击次数: 1760 |
| 全文下载次数: 887 |
| 中文摘要: |
| KOLWEZI铜钴矿位于刚果（金）-赞比亚铜钴矿带，卢菲利弧外部褶皱推覆构造带西北缘，KOLWEZI复式推覆体上。该矿床主要受Mines亚群及卢菲利造山运动D1阶段褶皱、逆冲推覆、断层及层间断裂控制。矿体呈层状，矿石主要为它形粒状结构，层状、浸染状构造，矿石矿物和脉石矿物按生成序次可以分为四个组合。结合毗邻KOLWEZI的类似矿床的地球化学研究以及中非铜矿带的研究成果，认为KOLWEZI铜钴矿床的成矿过程经历了三个成矿期次，其中同成岩期成矿是形成KOLWEZI铜钴层状矿体的主要期次，同造山期矿化使先成层状矿体中的硫化物矿物发生活化、再沉淀，同造山构造活动一定程度上塑造了KOLWEZI铜钴矿床如今的产出状态。分析认为，KOLWEZI铜钴矿应属同成岩层状沉积矿床。 |
| 英文摘要: |
| Kolwezi Copper and Cobalt Deposit is located in the Kolwezi Multi-Nappe, the northwestern margin of the Luiflian Arc’s External Fold-Nappe Belt, which belongs to the Congo-Zambia copper and cobalt mineral zone. The deposit is mainly controlled by the Mine Subgroup of the Luo’angroup and structures like folds, thrust nappes, faults and inter layer fractures at the D1 stage during the Luiflian orogeny. Ore bodies occur at stratiform pattern and ore present primarily at anhedral granular texture and layered or disseminated structures. Ore minerals and gangue minerals altogether can be divided into four series based on paragenesis. Combined with the geochemical studies on analogous deposits adjacent to the Kolwezi Deposit and the research of the whole Central Africa ore belt, it can be inferred that the Kolwezi copper-cobalt deposit should have experienced three mineralization periods during its forming process, and the main mineralization phase was the syn-diagnetic period, after which the sulfide ore mierals in stratiform ore body was remobilized and precipitated subsequently during the period of the Luiflian orogeny It is also the orogeny that, to some extent, forged the final attitude of the Kolwezi copper-cobalt deposit. In conclusion, Kolwezi copper and cobalt deposit should be attributed to the syn-diagenetic sedimentary stratiform deposit. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
