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前言在整个人类历史中,砂金一直是金的重要来源,也可能是金最早的来源之一,这可追溯到公元前6000年。人类曾经采用过各种各样的方法开采砂金,从原始时人们采用的出矿蓝到现代人们采用的采金船。在很多地质和气候条件下都能形成砂金矿,根据一组综合指标如:时代(现代、第三纪)、气候(沙漠)、河流位置(现代河道、阶地、冲积扇)、沉积环境(残积的、冲积的、残余的、海滩的)、搬运类型(溪、风、冰川),矿床是埋在地下的还是出露地表的,可以对砂金矿进行分类。开采任何一种砂金床通常有几种方法。
Introduction Throughout human history, placer gold has been a significant source of gold and may also be one of the earliest sources of gold, dating back to 6,000 BC. Human beings have used a variety of methods to extract placer gold, from the primitive mining blue that people adopted to the gold mining vessels used by modern people. Gold and gold deposits can be formed in many geological and climatic conditions according to a combination of indicators such as age (modern, Tertiary), climate (desert), river location (modern rivers, terraces, alluvial fans), depositional environment Residual, alluvial, remnant, beach), handling types (streams, winds, glaciers), whether the deposits are buried underground or exposed from the surface can be classified into gold and gold deposits. There are usually several ways to mine any type of gold bed.