| 云南老王寨金矿区煌斑岩的源区成分模拟 |
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| 引用本文： | 黄智龙,王联魁.云南老王寨金矿区煌斑岩的源区成分模拟[J].矿物学报,1997,17(3):316-320. |
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| 作者姓名： | 黄智龙 王联魁 |
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| 作者单位： | 中国科学院地球化学研究所!贵阳，550002，中国科学院地球化学研究所!贵阳，550002，中国科学院广州地球化学研究所!广州，510640 |
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| 基金项目： | 国家自然科学基金!49602026，中国科学院矿床地球化学开放研究实验室基金 |
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| 摘 要： | 本文在总结云南老王寨金矿区煌斑岩的主要元素、过渡元素、亲石元素、稀土元素和同位素地球化学特征的基础上．利用岩石学混合计算方法对其源区成分进行了模拟，进而讨论了矿区这类岩石的成因。地球化学和模拟计算均表明，老王寨金矿区煌斑岩来源于交代富集地幔，板块俯冲（印度板块向欧亚板块俯冲）富含ALK、LREE及不相容元素的海底沉积物被带入地幔脱水形成的流体是引起本区地幔交代作用的主要因素。
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| 关 键 词： | 云南老王寨金矿区 煌斑岩 源区成分 地幔交代作用 |
COMPOSITIONAL MODELING OF MANTLE SOURCE FOR LAMPROPHYRES IN THE LAOWANGZHAL GOLD OREFIELD,YUNNAN |
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| Huang Zhilong, Wang Liankui ,Liu Jun..COMPOSITIONAL MODELING OF MANTLE SOURCE FOR LAMPROPHYRES IN THE LAOWANGZHAL GOLD OREFIELD,YUNNAN[J].Acta Mineralogica Sinica,1997,17(3):316-320. |
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| Authors: | Huang Zhilong Wang Liankui Liu Jun |
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| Institution: | Huang Zhilong, Wang Liankui ,Liu Jun1. |
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| Abstract: | On the basis of the characteristics of major elements,transition elements,lithophile ele-ments, rare-earth elements and isotopic geochemistry for lamprophyres in the Laowangzhai goldorefield,Yunnan Province,this paper modelled the composition of mantle source for lamprophyreswith Petrological Mixing Calculation, then discussed the genesis of lamprophyres. Geochemistryand modelled calculations showed that lamprophyres in the Laowangzhai gold orefield originatedfrom metasomatic fertile mantle. The fluids which were enriched in ALK,LREE and incompatib1eelements and were derived from dehydration of submarine sediments which were carried to mantlewedges as a result of plate subduction (the india-plate subduced toward the Eurasian-plate),maybe the major factors leading to mantle mctasomatism in this area |
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| Keywords: | Laowangzhai gold orefield Yunnan Province lamprophyre composition of mantle source mantle metasomatism |
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