CAJ | 학술논문

阿斯哈金矿位于东昆中金多金属成矿带东段，矿区地层出露简单，仅有古元古界金水口群，现发现的矿体均赋存于花岗闪长岩体的破碎带中。矿区含矿石英脉中流体包裹体主要为CO 2?水溶液三相包裹体和水溶液两相包裹体两种类型。成矿流体具有低盐度、中低温、富CO 2特征，流体的捕获温度在170~310℃之间，成矿压力为85~154 MPa，成矿深度为7.5~10.4 km，为中成深度。成矿过程中成矿流体运移到浅部时，大气降水的混入以及流体发生不混溶，致使流体的pH值、Eh值等物理化学条件发生改变，成矿物质在阿斯哈花岗闪长岩体中一系列NE向展布的张性裂隙扩张部位沉淀富集。
아사합금광위우동곤중금다금속성광대동단，광구지층출로간단，부유고원고계금수구군，현발현적광체균부존우화강섬장암체적파쇄대중。광구함광석영맥중류체포과체주요위CO 2?수용액삼상포과체화수용액량상포과체량충류형。성광류체구유저염도、중저온、부CO 2특정，류체적포획온도재170~310℃지간，성광압력위85~154 MPa，성광심도위7.5~10.4 km，위중성심도。성광과정중성광류체운이도천부시，대기강수적혼입이급류체발생불혼용，치사류체적pH치、Eh치등물이화학조건발생개변，성광물질재아사합화강섬장암체중일계렬NE향전포적장성렬극확장부위침정부집。
Asiha gold deposit is located in the east section of Kunlun metallogenic belt. The strata outcropped in this mining area is simple, in which only the Palaeoproterozoic Jinshuikou group can be seen. The found orebodies are all produced in the altered fractural zone of granodiorite. Fluid inclusions of ore-bearing quartz veins can be classified into two types: three-phase CO 2-aqueous inclusions and two-phase aqueous inclusions. The ore-forming fluids have characteristics of low salinity, medium-low temperature and rich carbon dioxide, whose trapping temperatures are within the scope of 170?310 ℃, the mineralization pressures range from 85 MPa to 154 MPa, corresponding to depths of 7.5?10.4 km, indicating that this mineral deposit is formed in mesogene mineralization environment. During the mineralization process, as the ore-forming fluid moved up to the superficial part, the physical and chemical conditions of the fluid, such as pH and Eh, were changed because the fluid was mixed with atmospheric precipitation and became immiscible. The ore-forming material is enriched in the expansion site of a series of NE trending tensile fractures of granodiorite in Ashiha.