尽管凤太矿集区的矿床成因研究已有多年历史，但是前人在成矿过程和成矿物质来源方面的研究仍有许多不同观点，争议集中于是否存在泥盆纪的热水沉积成矿过程。最早的研究认为本区在泥盆纪时发生过热水沉积过程且伴随铅锌矿化和金的预富集。但是近年来的成矿年代学研究表明铅锌矿化均发生在三叠纪，铅锌和金矿床是印支-燕山期构造-岩浆活动的产物。因此凤太矿田的成矿过程和成矿物质来源需要更详细的研究。区内矿床有明显的多期次矿化，在微区范围内可能出现不同世代硫化物共生的现象。传统整体分析方法不能有效的区分多期次矿化叠加的地球化学信息，因此这里使用原位微区的S同位素和微量元素分析方法来示踪不同期次矿化的成矿物质来源。本研究中使用LA-(MC-)ICP-MS原位分析技术，在实验开始前需要先制备原位分析所需的硫化物标准物质。系统的野外地质调查和精细的微区S同位素和微量元素分析将会为凤太矿田铅锌、金矿床的成因研究提供新的依据。

Despite many years of genetic studies of mineral deposits in Feng-Tai ore concentration area, numerous controversies regarding ore-metal source and ore-forming processes remain. The debate focuses on the source of metal and sulfur, whether it is hot-water sedimentation related or not. Earlier studies have suggested that the SEDEX Pb-Zn mineralization stage occurred and preliminarily enriched of Au in the sub-basin of Feng-Tai area during the Devonian period. However, as revealed by recent geochronologic studies of Pb-Zn mineralization, a growing number of researchers believe that the major stage mineralization occurred during India-Yanshan period and strongly linked with the metamorphic and magmatic hydrothermal event related to the orogeny. Therefore, further studies are needed to refine the ore-metal source and ore-forming process of the deposits in Feng-Tai concentration area. The multi-stage mineralization was found in the deposits of this area, which suggests that the sulfides with different generations may coexist in microscopic scales. Hence the in-situ sulfur isotopes and trace element within individual sulfides can be used to track metal and sulfur source and redox changes during the mineralization process. The technique of LA-(MC-)ICP-MS will be used in this study and the sulfide standards for sulfur isotope and trace element measurements will be prepared before analysis. The systematic field work combine with the elaborate micro-area sulfur isotope and trace element will document the evolution of the deposits in Feng-Tai ore field.