重砂测量是矿产普查最有效的工作方法之一。粤北某汞矿田即是运用此法而找到的。自一九五八年根据一比二十万重砂测量发现区域汞矿分散晕开展普查工作迄今,分别在矿田内及其外围进行了一比五万、一比一万与一比二千重砂测量,采集了上万个样品,从而圈定了矿田范围及其中17处分散 Heavy sand measurement is one of the most effective working methods of mineral census. A mercury mine in northern Guangdong is to use this method and found. Since 1958, according to a survey of one to 200,000 heavy sand sediments, mercury calamities have been scattered and carried out in the census work. Thus far, one to 50,000, one to ten thousand and one to two thousand Sand measurement, collected tens of thousands of samples, which delineated the field and 17 of them scattered