单式的冲积砂金矿层通常都位于底岩面的上下,这在世界各地几乎都是一样的。这个现象被公认为是冲积砂金成矿的一个基本规律。在民间淘金行业中,底岩与砂金富集的这种密切关系,特别为人们所重视。在我国各地民间淘金者中,就流传不少有关砂金矿底岩重要性的谚语。例如东北就有“淘金不到底,白搭二斗米”;江南地区有“淘金不见板,死了不闭眼”等说法。在历史悠久的黑龙江省淘金行业中、更有把探采砂金必见基岩比做是“到章程”的说法。所有这些都充分表明,淘金者把砂金探采中对真正底岩的揭露都视为是事关成败的关键问题。这些精辟的经验总结,确是抓到了砂金探采问题的要点,值得我们深思与借鉴。 Monolithic alluvial gold deposits are usually located above and below the surface of the rock, which is almost the same throughout the world. This phenomenon is generally recognized as a basic rule of alluvial gold mineralization. In the folk gold-mining industry, the close relationship between the sediment and the gold accumulation is especially valued by people. Among the folk gold-diggers in various parts of China, many proverbs about the importance of sand-rock deposits are widely circulated. For example, there are “northeast gold rush in the end, take two white bucket rice”; Jiangnan area “gold rush to see the board, died not closed eyes,” and so on. In the historic gold-mining industry in Heilongjiang Province, it is more of a matter of “going to the charter” to find out more about bedrock. All this fully shows that the gold diggers regard the exposure of the real rock as a key issue in the exploration and mining of gold. These brilliant lessons learned, indeed, captured the main points of exploration and exploration of gold, it is worth our consideration and reference.