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西秦岭寒武系中的层控金矿床,产于由碳质硅岩和碳质板岩组成的硅岩建造中。极其特征的硅岩建造为评价喷流作用及其对金矿床形成的控制,提供了重要的依据。研究表明,无论是围岩还是金矿石中,均普遍含有较高的硒,达到工业综合利用的要求。在局部地段甚至可圈出独立的硒矿体。在金矿石中,硒主要呈独立矿物和以类质同象形式存在于硫化物中,且硒与金存在密切的正相关关系。根据硒的富集特征和产出环境,笔者指出了我国硒的找矿前景。
The stratabound gold deposits in the Cambrian of the Western Qinling are produced in the formation of siliceous rocks composed of carbonaceous siliceous rocks and carbonaceous slate. The extremely characterized formation of silicon rocks provides an important basis for evaluating the jet flow and its control over the formation of gold deposits. Research shows that, whether rock or gold ore, are generally high in selenium, to achieve the requirements of comprehensive utilization of industry. In some locations can even circle independent selenium ore body. In gold ore, selenium is mainly in the form of isomorphism and isomorphism in sulfide, and there is a close positive correlation between selenium and gold. According to the enrichment characteristics of selenium and the output environment, the author points out the prospect of prospecting for selenium in our country.