| 浙江新昌地幔岩捕虏体中的硫化物包裹体初步研究 |
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| 引用本文： | 徐九华,储雪蕾.浙江新昌地幔岩捕虏体中的硫化物包裹体初步研究[J].地质论评,1999,45(6):640-645. |
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| 作者姓名： | 徐九华 储雪蕾 |
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| 作者单位： | [1]北京科技大学资源工程学院 [2]中国科学院地质研究所 |
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| 基金项目： | 国家自然科学基金(编号49673175) |
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| 摘 要： | 浙江新昌一带晚第三纪碱性玄武岩中地幔岩（二辉橄榄岩）捕虏体内存在大量硫化物熔体包裹体。电子探针分析表明，硫化物相成分主要为镍黄铁矿，次为磁共铁矿。硫化物包裹体的Ｎｉ／Ｆｅ值与寄主地幔岩的橄榄石含量呈正相关。同一包裹体的硫化物相成分不均一，自中心至边缘硫化物的Ｎｉ／Ｆｅ、（Ｆｅ＋Ｎｉ）／Ｓ值和Ｎｉ呈均呈增加趋势。通过与中国汉诺坝、德国ＷｅｓｔＥｉｆｅｌ东欧Ｎｏｇｒａｄ－Ｇｏｍｏｒ地区资料的综合分析，
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| 关 键 词： | 地幔岩 捕虏体 硫化物包裹体 电子探针 黄铁矿 |
A Study of Sulfide Inclusions of the Mantle Xenoliths from Xinchang, Zhejiang, China |
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| Xu Jiuhua.A Study of Sulfide Inclusions of the Mantle Xenoliths from Xinchang, Zhejiang, China[J].Geological Review,1999,45(6):640-645. |
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| Authors: | Xu Jiuhua |
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| Abstract: | The discovery of sulfide-melt inclusions in mantle xenoliths is of great significance in further understanding mantle depletion and enrichment, as well as ore-forming processes of mantle fluids. Many sulfide-melt inclusions are also found in lherzolite xenoliths of alkali basalt from the Xinchang area, Zhejiang Province. The EPMA study shows that sulfide phases in sulfide-melt inclusions are mainly composed of pentlandite, with a small amount of pyhrrotite. The Ni/Fe of sulfide inclusions is related to the content of olivine in the host mantle rocks. The composition of a single sulfide inclusion is not homogeneous, with Ni/Fe and (Fe+Ni)/S increasing from the center to the margin. Based on comparisons with sulfide-melt inclusion data from Hannuoba of China, West Eifel of Germany and Nogrod-Gomor of Northern Hungary and Southern Slovak, it may be considered that the compositions of sulfide-melt inclusions from different areas are various , showing regional characteristics in the sulfide compositions of mantle fluids. |
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| Keywords: | mantle xenolith sulfide inclusions electron microprobe Xinchang Zhejiang Province |
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