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本文以桂东大瑶山金矿集区最新勘探发现的广西昭平湾岛金矿为例,对其开展控矿条件调查研究,发现该矿床的金矿体有两种类型,分别受到花岗斑岩体、构造破碎带控制,斑岩体锆石U-Th-Pb年龄(465Ma)与构造破碎带控制的含金石英脉Ar-Ar年龄(187.87～244.88Ma)的明显差异也说明多种矿化类型的存在。弄清以上两个控矿条件的分布是下一步找矿的关键,通过物化探资料分析,总结找矿标志,提出了矿区外围3个找矿靶区并得到钻探验证。本文所介绍的金矿评价方法对大瑶山金矿集区的勘查找矿工作有重要的参考意义。
Taking the Zhaoping Bay Island Gold Mine in Guangxi Province, the latest exploration of the Dayaoshan Gold Mine in Guangxi Province, as an example, this paper conducts a survey on its ore-controlling conditions and finds that there are two types of gold ore bodies in the deposit, The difference between the U-Th-Pb zircon age of porphyry bodies (465Ma) and Ar-Ar age (187.87 ~ 244.88Ma) in the gold-bearing quartz veins controlled by tectonic crust also indicates that the ore bodies of various types of mines The existence of the type. To clarify the distribution of the above two ore-controlling conditions is the key to prospecting the next step. By analyzing the geophysical and geochemical data and summarizing the prospecting targets, 3 prospecting targets outside the mine area are proposed and verified by drilling. The gold evaluation method introduced in this paper has important reference significance for prospecting and prospecting in the Dayaoshan gold ore district.