砂金，为外生地质作用条件下形成的砂状金。砂金矿 Placer Gold 一词则由西班牙语演化而来，它起源于美洲的西班牙淘金者， 主要指由原生金矿床或含金地质体外生地质作用如风化、剥蚀、搬运、沉积等作用后，在河流中某个部位聚集而形成的金矿。
本文分析了湖南砂金矿床及砂金的开采情况。
This paper has analysed the Hunan alluvial gold deposit and its present mining status.
分别总结了砂金矿床品位及吨位分布的典型数学地质特征。
The typical mathematical and geological features of these models are detailed separately.
本文试图概述南方砂金矿床中胶结层的性质、成因和分布。
This paper made a description of the genesis, property and distribution of cemented layer in alluvial gold mines at the south part of China.
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