| 季根源,戴塔根,姬祥永,尚磊,姜爱玲.越南晋磨锑矿床稀土元素地球化学特征与成因探讨[J].矿产勘查,2015,6(6):793-799 |
| 越南晋磨锑矿床稀土元素地球化学特征与成因探讨 |
| Disscution on REE geochemistry characteristics and genesis of Jinmo antimony deposit, Vietnam |
| 投稿时间：2015-03-16 |
| DOI： |
| 中文关键词: 稀土元素 地球化学 晋磨锑矿 越南 |
| 英文关键词: REE, geochemistry, Jinmo antimony deposit,Vietnam |
| 基金项目:中国地质调查局科研项目(编号:12120114080601)资助。 |
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| 中文摘要: |
| 对越南晋磨锑矿床赋矿围岩、矿化岩石和矿石的稀土元素地球化学特征研究表明,围岩的ΣREE明显高于矿化岩石和锑矿石,具有中度Eu负异常,矿石以明显的Ce负异常区别于围岩和矿化岩石,对比三者的稀土元素配分模式图,发现差异较大。类比锡矿山锑矿床、独山锑矿床成矿物质来源,结合矿区野外地质调查和稀土元素地球化学研究,认为晋磨锑矿床成矿物质与赋矿围岩无关,成矿物质可能来源于基底、幔源物质和隐伏岩体；成矿流体在运移过程中,由于物理化学环境的改变,辉锑矿在低压构造带或虚脱部位卸载,形成晋磨锑矿床。 |
| 英文摘要: |
| Analysis and study on the geochemical characteristics of REE in the wall rocks, mineralized rocks and ores of Jinmo antimony deposit shows that the ΣREE of wall rocks is much more than the others, with moderate negative Eu anomaly , ores are different by obviously negative Ce anomaly. Comparison with their REE distribution patterns illustrate that there are significant differences among them. By analogy between the Xikuangshan antimony deposit and the Dushan antimony deposit, combined with field geological investigation and the study of REE geochemistry, it is considered that the ore-forming materials are likely from basement, mantle derived material and concealed rock mass, and independent of ore-hosting wall rocks. When ore-forming fluids transported, stibnite unloaded in the low structure zone and collapse location as a result of the change of the metallogenic physicochemical environment, then Jinmo antimony deposit was formed. |
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