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陨石中铬尖晶石同某些铬铁矿床内铬尖晶石成分对比
The Comparison of the Chrome Spinets Composition between Meteorites and the some Chromite Deposites
  
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郑新华  黄耀民
中国地质科学院地质研究所 (郑新华)
,中国地质科学院地质研究所(黄耀民)
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       By way of comparing the composition of meteorite chrome spinets with the chrome spinets in some chromite deposits may raise the understanding of the genesis of the earth chramite. The average composition of chondrite chrome spinet can represent that of all sort meteorites, hence it can be used as a standard for the earth chrome spinets. The characteristic of the composition of meteorite chrome spinets is related with the high ferrous medium, extremity low pressure, reducing condition, as well as undergone a very slow process of cooling and crystallization. The variation of the chemical composition of chrome sninels in the various meteorites is similar to that of the main kind of earth at a depth of about 50-100Km. chromite deposits (i.g.ophiolite yype and layer).The coefficient of the ferrous in .the chromium end member indicates the better differentiation of the begin- ring substa}ate.
郑新华,黄耀民,1985,陨石中铬尖晶石同某些铬铁矿床内铬尖晶石成分对比[J].岩石矿物学杂志,4(3):202~209.
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