| 东马珠穆沁旗中铁陨石表面的角砾状橄榄石的特征 |
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| 引用本文： | 陶克捷,杨主明,等.东马珠穆沁旗中铁陨石表面的角砾状橄榄石的特征[J].岩石学报,2001,17(2):321-324. |
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| 作者姓名： | 陶克捷 杨主明 |
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| 作者单位： | 中国科学院地质与地球物理研究所,北京,100029 |
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| 基金项目： | 国家自然科学基金资助项目(49872020). |
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| 摘 要： | 东乌珠穆沁旗中铁陨石中有二种橄榄石。一种是陨石中基质橄榄石，另一种是镶嵌在陨石表面的角砾状橄榄石。电子探针成分分析结果表明，两种橄榄石中的FeO和MnO比值，包体矿物种类，包体铁纹石和镍纹石中Fe,Ni的含量等，均有较大区别。陨石中基质橄榄石矿物是本陨石中原物质，而角砾状橄榄石是宇宙中物质。他们是两块自由翱于宇宙中的物质碰撞混合而形成的东乌珠穆旗陨石中这种现象。
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| 关 键 词： | 东乌珠穆沁旗中铁陨石 基质橄榄石 原生透铁橄榄石 角砾状橄榄石 镁铁橄榄石 |
| 修稿时间： | 2000年6月26日 |
Mineralogical features of olivine in Dongujimqin mesosiderite. |
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| TAO KeJie,YANG ZhuMing,ZHANG PeiShan and HAN XiuLing.Mineralogical features of olivine in Dongujimqin mesosiderite.[J].Acta Petrologica Sinica,2001,17(2):321-324. |
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| Authors: | TAO KeJie YANG ZhuMing ZHANG PeiShan and HAN XiuLing |
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| Institution: | TAO KeJie,YANG ZhuMing,ZHANG PeiShan and HAN XiuLing. Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing,China |
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| Abstract: | Two types of olivine in the Dongujimqin mesosiderite were identified: the matrix olivine and the brecciform olivine. The electron microprobe analyses show that there are distinct differences between two types of olivine in the aspects of the FeO/MnO ratio, the species of inclusion minerals, the concentrations of Fe an Ni in kamacite and taenite inclusions. It indicates that the matrix olivine was from the host meteorite and the brecciform olivine was from the other cosmic substance. It is the collision and combination of two cosmic substances soaring separately in cosmos that formed the Dongujimqin mesosiderite. |
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| Keywords: | Dongujimqin mesosiderite Matrix olivine (primary hyalosiderite) Brecciform olivine (foreign hotonolite) |
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