论文部分内容阅读
哈达门沟金矿经过验证具超大型金矿床规模,金矿除严格受构造控制以外,又具有其自身独特性,如围岩的金高背景值、山前砖红色碎裂蚀变岩带、晶形粗大的黑云母花岗伟晶岩脉及岩浆多期侵入等,都成为金矿床形成不可或缺的因素。以幔枝构造理论为指导,通过对矿床地质特征及诸因素综合研究,认为哈达门沟金矿属于断裂—蚀变岩型矿床,乌拉山岩群是重要的矿源层;EW向主次拆离带(主次断裂)为主要的导矿、容矿构造;多期次岩浆活动,尤其是印支期大桦背岩体、华力西晚期沙德盖岩体的形成为矿床提供热力、热水及部分成矿物质;成矿与黑云母花岗伟晶岩及乳白色石英脉脆性变形关系密切。探讨了矿床成矿规律,提出了找矿远景。
The Hadamagou gold deposit has been verified to have a super-large gold deposit scale. The gold deposit has its own uniqueness except for its structural control. For example, the gold background value of the surrounding rock and the brick-red fractured alteration rock belt before the piedmont rock, Large-scale biotite granite pegmatite veins and magmatic multiple intrusions, have become an indispensable factor in the formation of gold deposits. Guided by the theory of mantle branch structure, based on the comprehensive study on the geological characteristics and various factors of the deposit, it is concluded that the Hadamock gold deposit belongs to the fracture-alteration rock type deposit and the Wulashan group is an important source rock. The EW primary and secondary detachment (Primary and secondary faults) are the main ore-bearing and ore-bearing structures. The multi-stage magmatic activities, especially the Indosinian Dahuaopian massif and the formation of the late Variscan Shadag massif, provide heat for the ore deposit, Water and some metallogenic materials. The mineralization is closely related to the brittle deformation of biotite granitic pegmatite and milky quartz vein. The metallogenic regularity of deposit is discussed, and prospect of prospecting is proposed.