西藏努日矿区隐伏斑岩型矿体的潜在性研究

Study on the Existence of Blind Porphyry Ore-body in Nuri Ore District,Tibet

通过详细的野外地质观测和钻孔编录,将努日矿区角岩体特征、角岩中裂隙及脉体特征、矿化特征与甲玛、驱龙、邦铺和沙让等斑岩型矿床进行对比,并结合前人关于矿床成岩成矿时代的相关成果,认为矿区深部存在隐伏的斑岩型矿体。通过分析矿区角岩体分布特征及其厚度的变化情况以及矿区裂隙和脉体发育程度、产状变化等信息,对该矿区下一部工作进行了初步分析,认为在矿区37～41线布置深钻有望发现深部隐伏斑岩矿体。

Based on detailed geologic observation and core logging,develop some comparative study for Nuri and other porphyry ore deposits（Jiama deposit,Qulong deposit,Bangpu deposit and Sharang deposit） on the features of hornfels,fractures and veins in hornfels and the features of mineralization and so on.Combing previous research results of diagenetic and metallogenic epoch of this ore deposit,the blind porphyry ore-body is existing deep in the Nuri ore district.Put forward some suggestions on the next work of prospecting and exploration and arrange the deep drilling in the area of prospecting line 37 to prospecting line 41 is supposed to hit the blind porphyry ore-bodies by analyzing the distribution of hornfels,thickness variation of hornfels and the development degree and attitude variance of the fractures and veins in the ore district.