| 铝对铬成矿地球化学的依存性和对抗性 |
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| 引用本文： | 戚长谋.铝对铬成矿地球化学的依存性和对抗性[J].吉林大学学报(地球科学版),1997(4). |
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| 作者姓名： | 戚长谋 |
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| 作者单位： | 长春科技大学地球探测与信息技术学院 |
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| 摘 要： | 基于岩浆铬矿床与超镁铁质岩石的关系，从元素亲合性和共生规律的角度揭示了铝对铬成矿制约的主导作用，分析了铝和铬亲石、亲氧的二重性及其晶体化学的依存关系。论证了超镁铁Ｓｉ－Ｏ体系中铝丰度过高或过低均不利于铬的成矿。揭示了制约元素分散富集的因素都是在一定条件下互为依存和转化的，是在动态中的矛盾的对立和统一。
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| 关 键 词： | 超镁铁岩 幔源 硅酸盐 类质同象 |
GEOCHEMICAL DEPENDENCE AND ANLOGONISM OF ALUMINUM ON CHROMIUM MINERALIZATION |
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| Qi Changmou.GEOCHEMICAL DEPENDENCE AND ANLOGONISM OF ALUMINUM ON CHROMIUM MINERALIZATION[J].Journal of Jilin Unviersity:Earth Science Edition,1997(4). |
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| Authors: | Qi Changmou |
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| Abstract: | Based on the study of the relationships of magmatic chromium deposits with ultramafic rocks, the paper discusses the dominating role of aluminum in the chromium mineralization in the view of element affinity and coexistence. The dependence among the duality of lithophile and oxgenphile of aluminum and chromium, and their crystal chemistry is studied. It is also shown that higher or lower amount of aluminum in the ultramafic Si-O system is unbeneficial to chromium minerlization. It is indicated that the factors which control the concentration and dispersion of elements are dependent on and exchangeable with each other under certain conditions. |
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| Keywords: | ultramafic rocks mantle source silicate isomorph |
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