过去,找金人员早期工作的指导原则是“丛林地、荒沙漠”,而且在许多情况下显然是在当时地质学家所不注意的地方偶然发现的。这并不是说砂矿床的分布是没有规律的,并非如此;之所以会使人得出这个印象乃是因为人们还没有认识找矿的标志,否则,地质工作者就会很快得出一致的找矿观点。由于发现新矿床已经日益困难,所以现在就需要比以往更多的地质知识,特别是形成独特的金砂矿的砂矿地质特征方面。 关于砂金勘探问题,本文分三个标题进行讨论。“勘探地质”一节简要地讨论了砂金的来源和一些重要砂矿类型的形成、变迁和保存的环境。“有关的技术”一节把注意 In the past, the guiding principle for the early job of finding gold was “jungle, deserted desert” and in many cases was apparently accidentally discovered at a time when geologists did not pay attention. This is not to say that the distribution of the sand deposits is not regular, not so; the reason why people can make this impression is because people do not yet know the sign of prospecting, otherwise, geologists will quickly come to agreement Prospecting mine. As discovering new deposits has become increasingly difficult, more geotechnical knowledge than ever before is needed, especially in the geological features of sand that form unique gold deposits. On the issue of gold exploration, this article is divided into three headings for discussion. The Exploration Geology section briefly discusses the source of placer gold and the formation, transition and preservation of some important types of placer deposits. Take note of the “related technologies” section