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王坞钼铜矿床是北武夷地区近年来发现并正在勘查的具大型规模以上潜力的矿床。在矿床地质特征研究的基础上,通过锆石LA-ICP-MS U-Pb法测年,获得矿区中与钼矿体在空间上关系密切的花斑岩脉的加权平均年龄为(127.5±1.8)Ma(MSWD=1.4),说明其形成于早白垩世;通过辉钼矿Re-Os法测年,获得辉钼矿Re-Os等时线年龄为(153.7±3.2)Ma(MSWD=3.9),说明钼矿形成于晚侏罗世。因此,花斑岩脉的成岩时代远远晚于钼矿成矿时代,表明两者无成因联系。通过对比邻区矿床成矿特征并结合现有资料分析,推断王坞矿区成钼岩体为酸性花岗斑岩或黑云母花岗岩,位于南东方向深部,深部找矿前景较好。北武夷地区中生代主要成钼时期为晚侏罗世早期(155 Ma±)和早白垩世早期(135 Ma±),该时期钼铜矿的形成与古太平洋板块俯冲形成的弧岩浆活动有关。
Wangwu molybdenum copper deposit is found in northern Wuyi area and is being investigated in recent years with large-scale potential deposits. Based on the study of the geological characteristics of the deposit, the weighted average age of the porphyritic veins which is closely related to the molybdenum ore body in the mining area is obtained by LA-ICP-MS U-Pb dating of zircons (127.5 ± 1.8 ) Ma (MSWD = 1.4), indicating that it was formed in the Early Cretaceous. The Re-Os isochron age of (153.7 ± 3.2) Ma (MSWD = 3.9) , Indicating molybdenum ore formed in the Late Jurassic. Therefore, the diagenetic age of the porphyry veins is much later than the molybdenum mineralization, indicating that there is no causative relationship between the two. By comparing the mineralization characteristics of adjacent deposits and the existing data analysis, it is inferred that the molybdenite body in Wangwu mining area is acidic granite porphyry or biotite granite. It is located in the deep part of south-east direction, and the prospecting prospect in deep part is better. The main molybdenum-forming periods of the northern Wuyi area were Late Jurassic (155 Ma ±) and Early Early Cretaceous (135 Ma ±), during which the formation of molybdenum and copper deposits was related to the arc magmatism formed by subduction of the Paleo-Pacific plate.