Re-Os同位素体系具有独特的地球化学性质理应成为中酸性岩岩石成因研究的重要手段，但由于中酸性岩的Re、Os含量极低，技术方法难以满足分析要求，限制了Re-Os体系在中酸性岩中的应用。本研究针对中酸性岩的特点进行溶样条件，实验流程和TIMS测量方法的改进，建立能够满足此类样品Re-Os分析测试的方法。西藏驱龙矿床是产出于大陆碰撞环境下的斑岩矿床，其岩浆成因存在争议，是研究的热点。本研究以驱龙矿床为应用对象开展Re-Os同位素研究，寻找中酸性岩中Re、Os的富集矿物，与其他同位素手段联合约束含矿岩浆起源，精细刻画岩浆演化过程，揭示成岩成矿关系。

Re-Os isotpic system with unique geochemical character has the great potential to be a critical approach for disclosing the petrogenesis of the intermediate-acid rock. However, due to the low concentration of Re and Os in the intermediate-acid rock,it is difficult to measure Re-Os system in them accurately and experiment method has become the barrier for the application. According to the characteristic of intermediate-acid rock, this research will improve the digestion conditions, the procedures and TIMS measurement method according to build a specific Re-Os analysis method for the intermediate-acid rock. Qulong porphyric deposit occurs in continental collision enviroment, which is different from the classic porphyric deposit. The petrogenesis of this deposit is both the controversy and the hot pot. This research will apply Re-Os isotopic system in Qulong deposit, seek what mineral enrich Re and Os in intermediate-acid magmatic system, together with other isotopic system constrain the source of the magma, fine depict the magmatic evolution, and disclose the relation between petrogenesis and ore-forming process.