(1. 中南大學 有色金屬成礦預測教育部重點實驗室，長沙 410083；
2. 中南大學 地球科學與信息物理學院，長沙 410083；
3. 湖南省地質(zhì)科學研究院，長沙 410007)
摘 要: 阿斯哈金礦位于東昆中金多金屬成礦帶東段，礦區(qū)地層出露簡單，僅有古元古界金水口群，現(xiàn)發(fā)現(xiàn)的礦體均賦存于花崗閃長巖體的破碎帶中。礦區(qū)含礦石英脈中流體包裹體主要為CO2-水溶液三相包裹體和水溶液兩相包裹體兩種類型。成礦流體具有低鹽度、中低溫、富CO2特征，流體的捕獲溫度在170~310 ℃之間，成礦壓力為85~154 MPa，成礦深度為7.5~10.4 km，為中成深度。成礦過程中成礦流體運移到淺部時，大氣降水的混入以及流體發(fā)生不混溶，致使流體的pH值、Eh值等物理化學條件發(fā)生改變，成礦物質(zhì)在阿斯哈花崗閃長巖體中一系列NE向展布的張性裂隙擴張部位沉淀富集。
關鍵字: 流體包裹體；成礦流體；阿斯哈金礦；東昆侖
（1. Key Laboratory of Metallogenic Prediction of Nonferrous Metals, Ministry of Education,
Central South University, Changsha 410083, China;
2. School of Geosciences and Info-Physics, Central South University, Changsha 410083, China；
3. Hunan Academy of Geological Sciences, Changsha 410007, China）
Abstract: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 CO2-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.
Key words: fluid inclusions; ore-forming fluid; Asiha gold deposit; east Kunlun
