| 陨石中铬尖晶石同某些铬铁矿床内铬尖晶石成分对比 |
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| 引用本文： | 郑新华,黄耀民.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,1985,4(3):202-209. |
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| 作者姓名： | 郑新华 黄耀民 |
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| 作者单位： | 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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| 摘 要： | 本文主要通过陨石铬尖晶石和地球某些铬铁矿床中铬尖晶石成分之间的对比,结合一些实验资料,探讨它们的形成条件,以便对地球铬铁矿成因有进一步的认识。
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The Comparison of the Chrome Spinets Composition between Meteorites and the some Chromite Deposites |
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| Abstract: | 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. |
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