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引言 近来关于把铊用作矿床标志的研究表明,与各种矿床伴生的各种蚀变岩石都含有高浓度的T1,并具有低的K/T1和Ba/T1比值以及高的T1/Sr比值。为了进一步查明热液蚀变作用期间T1、Rb、K、Ba和Sr的行为,对内华达州科莫矿区的含Au-Ag石英脉和伴生火山岩进行了详细的研究。 本文的主要目的是对利用T1的丰度和Ba/T1和K/T1比值作为寻找赋存在火山岩中的贵金属脉型矿床的勘探工具的可能性作出评价。
INTRODUCTION Recent studies using thallium as a deposit indicate that various altered rocks associated with various deposits contain high concentrations of T1 with low K / T1 and Ba / T1 ratios and high T1 / Sr ratios . In order to further clarify the behavior of T1, Rb, K, Ba and Sr during hydrothermal alteration, the Au-Ag quartz vein and associated volcanic rocks in the Como area, Nevada, were studied in detail. The main purpose of this paper is to evaluate the possibility of using T1 abundances and Ba / T1 and K / T1 ratios as an exploration tool for finding noble metal vein deposits in volcanic rocks.