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巴基斯坦山达克铜(金)矿位于查盖—拉斯克赫成矿带,产于近EW向Saindak断裂(F1)及SN向Amalaf(FA)断裂之间。结合该矿区地质勘探成果,对矿区成矿地质背景、矿区地质特征、矿床地质特征进行了分析,并对控矿因素、矿床成因进行了讨论。研究表明:1矿体主要赋存于云英闪长斑岩岩体的绢英岩化带内,多呈透镜状、似层状产出,厚度稳定,矿化均匀;2矿石矿物以黄铜矿、斑铜矿、黄铁矿等为主,矿石组构以结晶结构、交代结构及细脉—浸染状构造为主;3矿区蚀变作用强烈,绢云母化、硅化与矿化关系密切,自上而下可划分为钾化硅化带(Kp)、绢英岩化带(Phl)、青磐岩化带(Prl);4矿床主要受岩浆岩、构造、围岩蚀变及围岩控制,矿体受山达克闪长玢岩、云英闪长玢岩及云英闪长斑岩复式岩体的控制作用明显,属浅成岩浆热液型矿床。在上述分析的基础上,分别从构造、岩浆岩、蚀变、矿化露头等方面总结了矿区找矿标志,综合控矿特征及矿化特征分析认为,构造交汇部位、蚀变(分带)地段及矿化露头可作为寻找同类斑岩型矿床的有利标志。
The Sakhalik copper (gold) mine in Pakistan is located in the Chagai-Raskor metallogenic belt between the EW-to-Saindak fault (F1) and the SN-Amalaf (FA) fault. Combined with the geological exploration results of this mining area, the mineralization geological background, the geological characteristics of the mining area and the geological characteristics of the deposit are analyzed, and the ore depositing factors and deposit genesis are also discussed. The results show that: 1 Ore body mainly occurs in the sericite-petrified belt of the Yun-ying dioritic porphyry rock, mostly lenticular and laminar-like with stable thickness and uniform mineralization; ore ore 2 is mainly composed of brass Ore, bornite, and pyrite. The ore structure is mainly composed of crystalline structure, metasomatism structure and veinlet-disseminated structure. The alteration of the orefield 3 is intense, the sericite, silicification and mineralization are closely related, From top to bottom, it can be divided into Kp, Phl and Prl. The ore deposit 4 is mainly affected by magmatic rocks, tectonic alteration and wall rock control , The ore body is controlled by Shankeke diorite rock, Yunying diorite rock and Yunying diorite porphyry complex rock body obviously, which belongs to the epithermal magmatic hydrothermal deposit. On the basis of the above analysis, the ore-prospecting signs in the mining area are summarized from the aspects of tectonics, magmatic rocks, alteration and mineralization outcrops respectively. Based on the analysis of the comprehensive ore control features and mineralization characteristics, it is considered that the structural intersections, alteration (zoning) Lot and mineralized outcrop can be used as a good indication for finding similar porphyry deposits.