| 成矿元素富集机制的量子地球化学研究——以攀枝花钒钛磁铁矿矿床为例 |
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| 引用本文： | 龚荣洲,於崇文,岑况.成矿元素富集机制的量子地球化学研究——以攀枝花钒钛磁铁矿矿床为例[J].地学前缘,2000,7(1):43-51. |
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| 作者姓名： | 龚荣洲 於崇文 岑况 |
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| 作者单位： | 1. 中国地质大学,湖北,武汉,430074
2. 中国地质大学,北京,100083 |
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| 基金项目： | 中国科学院资助项目，49633120， |
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| 摘 要： | 攀枝花钒钛磁铁矿矿床为富集钒、钛、铁等过渡元素的典型岩浆矿床。文章运用量子地球化学的理论和方法研究该矿床的元素组合、分配及变化特征 ,并用量子力学理论的abini tioHartree Fock分子轨道法对钛磁铁矿和钛铁矿晶体结构进行了模拟计算。结果表明 :源于地幔的原始岩浆富集成矿元素 ;在其结晶过程中 ,V ,Ti,Fe等成矿元素再次富集于钛磁铁矿和钛铁矿中而形成矿床 ,这种再富集受晶体结构择位能控制。
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| 关 键 词： | 量子地球化学 钒钛磁铁矿 abinitio Hartree-Fock分子轨道 钛铁矿 攀枝花 |
QUANTUM GEOCHEMICAL STUDY ON MECHANISM OF CONCENTRATION FOR ORE-FORMING ELEMENTS IN PANZHIHUA VANADIC TITANOMAGNETITE ORE DEPOSIT |
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| GONG Rong-zhou,YU Chong-wen,CEN Kuang.QUANTUM GEOCHEMICAL STUDY ON MECHANISM OF CONCENTRATION FOR ORE-FORMING ELEMENTS IN PANZHIHUA VANADIC TITANOMAGNETITE ORE DEPOSIT[J].Earth Science Frontiers,2000,7(1):43-51. |
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| Authors: | GONG Rong-zhou YU Chong-wen CEN Kuang |
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| Abstract: | Panzhihua vanadic titanomagnetite ore deposit is characterized by high concentration of transition elements V, Ti and Fe etc. The theory and method of quantum geochemistry were applied to study the association, partition and concentrate of chemical elements in the ore deposit, and the tetrahedral and octahedral molecular clusters stabilization energy was calculated by using the ab initio Hartree Fock molecular orbital method. The results show that the initial magma derived from mantle abounded with V, Ti, Fe and other ore forming elements and during its crystallization these ore forming elements re concentrated in titanomagnetite and ilmenite, which is controlled by the tetrahedral and octahedral molecular clusters stabilization energy in crystal structure. |
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| Keywords: | quantum geochemistry vanadic titanomagnetite ab initio Hartree Fock molecular orbital ilmenite Panzhihua |
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