“沙”与水有关,如河沙、海沙、沙滩、沙洲,或在水边,或在水中。堆积在河底、河口不稳定的沙和随地下水流动转移的夹在地层中的沙叫流沙。沙金本是矿物,但因为是从水中淘出来的,所以不能写成“砂金”。“砂”多与矿物有关。首先,可指矿砂,比如硼砂、朱砂、 Sand is related to water, such as river sand, sea sand, sand, sandbanks, or on the water’s edge or in water. Accumulation in the river bottom, the unstable estuary of the sand and the groundwater flow transfer in the sand trapped in the formation called the quicksand. Sha Jinben is a mineral, but because it is scoured out of the water, it can not be written as “gold”. “Sand ” and more related to minerals. First of all, it can mean ore, such as borax, cinnabar,