| THE CHEMICAL COMPOSITIONS OF MINERALS IN QINGZHEN METEORITE AND ITS GEOCHEMISTRY SIGNIFICANCE |
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| 作者姓名： | 侯渭 欧阳自远 A.EL.GORESY H.YABUKI |
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| 作者单位： | Guiyang Institute of Geochemistry，Academia Sinica，Guiyang Institute of Geochemistry，Academia Sinica，Max-Planck Institute Fur Kernphysik，Heidelberg，West Germany，Institute of Physical and Chemical Research，Japan |
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| 摘 要： | The chemical compositions of silicate minerals, sulphide minerals and metal Fe-Ni in theQingzhen meteorite were measured by the microprobe analyses. Based upon these chemicalcompositions, the cosmochemical behaviour and characteristics of the existing forms of themajor elements in the Qinzhen meteorite have been discussed. These characteristics show thatunder the S-rich, O-poor, and strongly reducing conditions, the light metal elements, such asCa, Mg, K, Na may form sulphide, and metal Fe-Ni may contain Si and P. However, we con-sider that the light metal-sulphide can be stable in the lower mantle and there are some Siand P in the Fe-Ni core. Finally, an earth core-mantle model is established, where the Fe-Ni core contains some Si and P; the lower mantle is composed of Mg-rich silicate, SiO_2 andsulphide; the upper mantle, of silicate and oxide.
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THE CHEMICAL COMPOSITIONS OF MINERALS IN QINGZHEN METEORITE AND ITS GEOCHEMISTRY SIGNIFICANCE |
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| HOU WEI,OUYANG ZI-YUAN,A.EL.GORESY,H.YABUKI Guiyang Institute of Geochemistry,Academia Sinica Max-Planck Institute Fur Kernphysik,Heidelberg,West Germany Institute of Physical and Chemical Research,Japan.THE CHEMICAL COMPOSITIONS OF MINERALS IN QINGZHEN METEORITE AND ITS GEOCHEMISTRY SIGNIFICANCE[J].Science in China(Chemistry),1989(8). |
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| Authors: | HOU WEI OUYANG ZI-YUAN AELGORESY HYABUKI Guiyang Institute of Geochemistry Academia Sinica Max-Planck Institute Fur Kernphysik Heidelberg West Germany Institute of Physical and Chemical Research Japan |
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| Abstract: | The chemical compositions of silicate minerals, sulphide minerals and metal Fe-Ni in theQingzhen meteorite were measured by the microprobe analyses. Based upon these chemicalcompositions, the cosmochemical behaviour and characteristics of the existing forms of themajor elements in the Qinzhen meteorite have been discussed. These characteristics show thatunder the S-rich, O-poor, and strongly reducing conditions, the light metal elements, such asCa, Mg, K, Na may form sulphide, and metal Fe-Ni may contain Si and P. However, we con-sider that the light metal-sulphide can be stable in the lower mantle and there are some Siand P in the Fe-Ni core. Finally, an earth core-mantle model is established, where the Fe-Ni core contains some Si and P; the lower mantle is composed of Mg-rich silicate, SiO_2 andsulphide; the upper mantle, of silicate and oxide. |
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| Keywords: | enstatite chondrite Qingzhen meteorite earth core-mantle model |
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