石英含金机理探讨

DISCUSSION ON THE MECHANISM OF GOLD BEARING QUARTZ

简要介绍了金在石英中的赋存状态和金的迁移形式 ;论述了金的电子结构及性质、二氧化硅的电子结构特点和石英晶体表面特征 ;并应用稳定配合物的 18电子规则和晶体生长的界面相模型来分析和认识石英含金机理。通过分析研究后认为 ,石英含金不仅与石英的表面结构、内部缺陷和表面特征有关 ,还与石英生长的环境有关 ,尤其是与石英的表面键电子结构特点有关 ,并主要受石英晶体生长过程中的界面相控制 ;我们在寻找石英脉型金矿床和研究石英含金机理时 ,不仅要注意成矿流体特征 ,更要重视石英晶体生长过程中的界面相。

The gold exiSting states in quartz and the gold migrating manner in ore forming liquid are briefly simply mentioned. The gold electronic structure and its features, the silicon dioxide electronic structure features and the surface structure of quartz are disussed. Then,the 18 electron regulation about the assorting material and the interface phase model of crystal growth are used to interpret the mechanism of gold bearing quartz. Furthermore,the mechanism of gold bearing quartz is not only connected with the surface structure, inner defect and the surface features of quartz, but also connected with the environment phase of quartz growth, and controlled by the interface phase. When exploring quartz vein type gold deposit and studying the mechanism of gold bearing quartz,much attention should be paid to the ore forming liquid and to the features of interface phase during the quartz growth.