| REE geochemistry of lamprophyres in Baimazhai nickel deposit, Yunnan Province, China： implication for the mantle source region |
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| 引用本文： | 管涛,黄智龙,许成,张振亮,严再飞,申宝剑.REE geochemistry of lamprophyres in Baimazhai nickel deposit, Yunnan Province, China： implication for the mantle source region[J].中国地球化学学报,2005,24(3):273-279. |
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| 作者姓名： | 管涛 黄智龙 许成 张振亮 严再飞 申宝剑 |
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| 作者单位： | [1]Open Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China [2]Graduate School, Chinese Academy of Sciences, Beijing 100039, China |
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| 摘 要： | Lamprophyresarewidespreadinthe“Sanjiang”(tri river)alkali richintrusiverockbelt(Ailaoshan Jinshajiangalkali richintrusiverockbelt)insouth westernChinaandhaveaclosetemporalandspatialre lationwithAu,Cumineralization(HuYunzhonget al.,1995;HuangZhilongetal.,1999).Therefore,thereiscrucialsignificanceinsuchaspectsastectonic environment,mantlemetasomatism,crust mantlein teraction,magmaticevolutionandassociatedminerali zation.TheBaimazhainickeldepositislocatedinthe southernsegmentofthe“Sanjiang…
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| 关 键 词： | 煌斑岩 地球化学 镍 沉积作用 云南 |
REE geochemistry of lamprophyres in Baimazhai nickel deposit, Yunnan Province, China: implication for the mantle source region |
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| Tao Guan,Zhilong Huang,Cheng Xu,Zhenliang Zhang,Zaifei Yan,Baojian Shen.REE geochemistry of lamprophyres in Baimazhai nickel deposit, Yunnan Province, China: implication for the mantle source region[J].Chinese Journal of Geochemistry,2005,24(3):273-279. |
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| Authors: | Tao Guan Zhilong Huang Cheng Xu Zhenliang Zhang Zaifei Yan Baojian Shen |
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| Institution: | (1) Open Laboratory of Ore Deposit Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, 550002 Guiyang, China;(2) Graduate School, Chinese Academy of Sciences, 100039 Beijing, China |
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| Abstract: | Based on the REE geochemistry data from the Baimazhai nickel deposit, Yunnan Province, the authors modeled the composition of the mantle source region by way of petrological mixing calculation, and further discussed the genesis of this type of rocks. Both element geochemistry data and mixing calculation showed that lamprophyres in the Baimazhai nickel deposit were derived from a metasomatism-enrichment mantle and the fluids resulted from dehydration of a subducted slab which is comprised of ALK-, LREE- and incompatible element-rich sediments. |
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| Keywords: | Baimazhai nickel deposit lamprophyre composition of mantle source region mantle metasomatism |
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