Abstract

Individual fluid inclusions in quartz from ore veins of the Askold gold deposit, which was previously attributed to the epithermal type, are studied for the first time. It is established that gold mineralization of Askold Island derived from ore-forming fluids of carbon dioxide–water–salt composition, with a salt concentration of 2.8–4.1 wt % NaCl equiv and a high carbon dioxide concentration, at temperatures of 280–324°C and pressures of 1240–2170 bar. The tectonic control of gold mineralization, the presence of tin and bismuth minerals in the ores, the high fineness of gold, and the characteristics of the mineral-forming fluids (primarily high pressures) indicate that the Askold deposit can be attributed to the type of gold deposits associated with granitoid intrusions.

中文翻译：

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Askold金矿床（俄罗斯Primorye的Askold岛）：成矿流体的物理化学参数和组成

摘要

首次研究了Askold金矿床矿脉中石英中的单个流体包裹体，这以前归因于超热类型。已经确定，Askold岛的金矿化是从成矿流体中的二氧化碳-水-盐成分中产生的，盐浓度为2.8-4.1 wt％NaCl当量，二氧化碳浓度很高，温度为280-324° C和1240-2170 bar的压力。对金矿化的构造控制，矿石中锡和铋矿物的存在，金的高纯度以及成矿流体的特征（主要是高压）表明，Askold矿床可归因于以下类型：与花岗岩侵入有关的金矿床。