论文部分内容阅读
西秦岭寒武系硅岩建造中的金矿床,是我国境内发现的一种具有独特地质特征的层控金矿床。通过对寒武系硅岩建造以及金矿石中金的浸出率、微量元素及其特征元素比值、稀土配分型式以及硫、铅、碳、氧、氢、硅等同位素组成等方面的系统研究表明,在后期成矿过程中,金及其它伴生元素主要来自寒武系硅岩建造;成矿溶液主要来自大气降水。地下热液在环流过程中,促使硅岩建造中的成矿物质发生活化、迁移和再聚集,并最终导致矿床的形成。
The West Qinling Cambrian Siyan gold deposits in the construction, is found in our country has a unique geological features of stratabound gold deposit. Based on the systematical studies on the Cambrian siltstone construction and the gold leaching rate, the trace element and its characteristic element ratio, the distribution pattern of rare earth elements and the isotopic composition of sulfur, lead, carbon, oxygen, hydrogen and silicon in gold ore, During the later metallogenesis, gold and other associated elements are mainly derived from Cambrian silicic rocks; the ore-forming solution is mainly from atmospheric precipitation. During hydrothermal circulation, the underground hydrothermal fluids activate, migrate and re-aggregate the metallogenic materials in the formation of the silicic rocks and ultimately lead to the formation of the deposit.