云南库独木金矿的TM分析、成矿流体和稳定同位素地球化学研究

对库独木金矿遥感TM图像的分析表明 ,北西向、南北向和近东西向三组大型线性构造带是金矿床的控矿构造 ,北西向韧性剪切构造带内的A型构造是金矿体的重要储容构造。区内成矿流体为一种多来源的混合成矿流体 ,流体中的水是由天水、同生地层水和深部热液水组成的混合水 ,Au主要来自韧性剪切带及附近的富金岩石 ,矿化石英脉的Si主要来自含碳硅质岩 ,S和Pb则主要来自地壳深部。

Studies of TM Analyses, Ore-forming Fluids and Stable Isotope Geochemistry in Kudumu Gold Deposit, Yunnan

Based on a systematic study of TM image analyses, this paper points out that Kudumu gold deposit are controlled by NW, SN and nearly EW trending megalinearment belts, and the A-type structure is the best impounding for the gold orebody. On the basis of systematic study of ore-forming fluids and stable isotope compositions, authors hold that the ore-forming fluid in the gold deposit is a mixed polygenetic ore-forming fluid, and its water is made up of meteoric, syngenetic stratum and deep hydrothermal water. The paper has discussed the source of ore-forming materials as well as the genesis of Kudumu gold deposit. The Au element in Kudumu gold deposit came from rich gold rocks in the ductile structure belt of NW trending and its nearby area. The Si in the auriferous quartz is from the carbon-bearing silicalite which is the wall rock of the gold orebody. The both S and Pb in the gold ore came from the deep mantle and has been mixed by a part of the continental crust.