热液矿床中不透明矿物的流体包裹体研究进展

Progress in research on fluid inclusions within opaque minerals in hydrothermal ore deposits

脉石矿物中流体包裹体所提供的有关流体与成矿的物理化学条件不一定代表成矿时的实际流体和成矿条件,最好的办法是直接测定矿石矿物捕获的包裹体。红外显微镜的运用开拓了不透明矿物中流体包裹体研究的新领域。文章对红外显微镜工作的基本原理及设备做了简要的综述,重点介绍了不透明矿物中流体包裹体岩相学、显微测温以及成分分析研究,并举例说明了不透明矿物流体包裹体在W-Sn矿床以及其他矿床研究中的应用,最后指出了不透明矿物中流体包裹体研究尚且存在的问题、部分解决方法,并简单展望了其在中国的发展前景。

Fluid inclusions trapped in gangue minerals do not necessarily provide reasonable estimates ot the depositional conditions of the ore minerals even though they are intimately intergrown, so the ideal case is to measure in- clusions hosted by the ore minerals themselves. The applications of infrared microscope open up a new area for fluid inclusion study of opaque minerals. First of all, a brief review of the infrared microscopic methodology and equipment is given. Moreover, this paper outlines the studies of fluid inclusion petrography, microthermometry and composition analysis, and illustrates the application of fluid inclusion study in opaque minerals with mineral deposit case studies. Finally, the existing problems and corresponding solutions, and a short lookout are pointed out.