新疆东天山白山钼矿床富铼的成因研究

铼是现代科技发展和工业生产的重要金属元素，富铼的辉钼矿是提炼铼的主要原料，但前人对富铼钼矿床的成因尚未开展深入研究。勘探资料表明新疆东天山白山钼矿床的辉钼矿具有富铼特点，为富铼钼矿床的成因研究提供了难得的机会。本项目拟综合野外地质、岩相学、矿物学、成矿流体和岩石地球化学等手段对白山钼矿床中铼的富集机理进行研究。在白山钼矿床地质特征认识的基础上，测定不同期次辉钼矿等硫化物铼的含量和分布、分析不同期次成矿流体的组成、温度、氧化还原度等性质，系统分析富铼成矿系统中流体的演化特征及其对铼富集的影响。对比白山和东戈壁钼矿床含矿斑岩的地质、地球化学特征，分析成矿岩浆岩的组成、源区与演化、氧化还原性等性质对富铼成矿系统的影响。综合以上对白山钼矿床的辉钼矿含铼特征、成矿流体、成矿岩浆岩的深入研究，阐述白山辉钼矿富铼机理和矿床成因。

Rhenium is an important metal, which is widely used in industry and resarch areas. Rhenium-rich molybdenite is the main mineral for refining Rhenium. However, there is scare result on the genesis of the Rhenium-rich molybdenite, and its mineralization system. The Baishan Mo deposit bearing rhenium-rich molybdenite provides a peculiar opportunity for us fill this gap. In this study, we plan to research the genesis of the Baishan Rhenium-rich molybdenite, and its mineralization system through field geology, petrography, mineralogy, ore-forming fluids and geochemical methods. Based on the identification of mineralization stages, we will test the Re contents in different stages molybdenites, recognize the characters of the corresponding ore-forming fluids, including composition, temperature, redox degree etc., and further analyze that which factor of the ore-forming fluids controls the generation of Rhenium-rich molybdenite. We research geological and geochemical characters of the ore-bearing porphyries from both Baishan and Donggebi Mo deposits, and further identify which character of the ore-forming magmatism (composition, source and evolution, redox etc.) is the main factor to control the high-Rhenium mineralization system. After Compile the characters of the Rhenium occurrence in molybdenite,the characters of the ore-forming fluids and ore-bearing porphyry above, we systemically expound the genesis of high-Rhenium mineralization system in Baishan Mo deposit, Eastern Tianshan, Xinjiang.