| 载金石英的化学成分特征及其意义 |
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| 引用本文： | 胡大千,贺义兴.载金石英的化学成分特征及其意义[J].吉林大学学报(地球科学版),1992(1). |
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| 作者姓名： | 胡大千 贺义兴 |
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| 作者单位： | 长春地质学院岩化系
(胡大千)，长春地质学院测试中心(贺义兴) |
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| 摘 要： | 利用电子显微镜(EM)及能谱仪(EDS),分析研究了变生热液形成的载金石英的化学成分、离子扩散作用以及金在石英中的赋存状态等问题,探讨了它们的形成和变化机理。研究结果表明:Al~(3+)、Ti~(3+)、TFe、Na~(+)、K~(+)、Ca~(2+)等在石英中为类质同像混入物;石英和黄铁矿之间的离子相互扩散作用,表现为石英中Al离子的带出和Fe离子的带入,黄铁矿中Fe离子的带出和Al离子的带入;石英中呈分散状态分布的金主要为离子金,它们充填在石英结构中,起平衡电价的作用。
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| 关 键 词： | 石英 离子扩散 离子金 |
THE COMPOSITIONAL CHARACTERISTICS OF Au-BEARING QUARTZ AND ITS SIGNIFICANCE |
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| Hu Daqian He Yixing.THE COMPOSITIONAL CHARACTERISTICS OF Au-BEARING QUARTZ AND ITS SIGNIFICANCE[J].Journal of Jilin Unviersity:Earth Science Edition,1992(1). |
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| Authors: | Hu Daqian He Yixing |
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| Institution: | Hu Daqian He Yixing(.Department of Geochemistry) (.Measure and Analysis Central) |
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| Abstract: | Electron microscope (EM)and energy dispersive spectrometer (EDS) were used to detect the composition of the Au-bearing quartz, the ion diffusion and the occurence states of gold. Their mechanism of formation and variation were discussed. The results indicate that Al3+, Ti3+, TFe, Na+, K+, Ca2+etc exist in the quartz as isomrpohism impurities. The ion diffusion between quartz and pyrite is marked by transference of Fe toward quartz and Al towards pyrite . The despersive gold in quartz is mainly ionic which is filled in the interstice of tetrahedron and play a role of keeping balance in electronic valence in the crystal structure. |
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| Keywords: | quartz ion diffusion ionic gold |
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