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对内华达科木矿区含金银石英脉和火山岩计92个样品做了Au、Ag、Tl、Rb、K和Sr分析,并得K/Tl、K/Rb、Ba/Tl,Tl/Sr和Rb/Sr等一系列数据。Au和Ag的浓度从未蚀变安山岩到蚀变安山岩至含Au-Ag石英脉随Tl/Sr和Rb/Sr比值升高而增大,但K/Tl,K/Rb和Ba/Tl的比值降低。Tl、Rb和K之间的上述关系,表明矿化岩石中三者的富集程度依次降低。本项研究获得的数据,表明Tl含量和Ba/Tl及K/Tl比值在圈定与火山岩有关的贵金属脉状矿床时,可作为有用的勘查工具,同时表明,由于在自然界中Au-Ag分布的不均匀性,它们的富集度的变化范围很大。
The results of Au, Ag, Tl, Rb, K and Sr analyzes of 92 samples containing gold, silicalite and volcanic rocks in the Kemu mining area of Nevada have K / Tl, K / Rb, Ba / Tl, Tl / Sr and Rb / Sr and a series of data. The concentrations of Au and Ag increased from unaltered andesite to alteration andesite to Au-Ag quartz veins with the increase of Tl / Sr and Rb / Sr ratios, but the ratios of K / Tl, K / Rb and Ba / Tl reduce. The above relationship between Tl, Rb and K shows that the enrichment degree of three of the mineralized rocks decreases in turn. The data obtained in this study indicate that the Tl content and the Ba / Tl and K / Tl ratios can be useful tools in the delineation of volcanic-related noble metal vein-like deposits and show that due to the distribution of Au-Ag in nature Inhomogeneities, their abundance varies widely.