某地钠化花岗岩中的水锡石已由邓楚均等作过研究。由于当时仅在钠化花岗岩的人工重砂样品中找到该种矿物,因而对水锡石的产状只作了简单的描述。对其成因则认为“是一种水化了的矿物”。笔者在该矿区露天采场的半风化钠化花岗岩标本上找到了水锡石,经光、薄片观察,并作了某些测试,查明了岩(矿)石中水锡石与其它矿物的连生关系,区分出原 Cassiterite in a localized sodium granite has been studied by Deng et al. Since only the mineral was found in artificial heavy sand samples of sodium granite at the time, only a brief description of the occurrence of the cassiterite was made. Its cause is that “is a hydrated mineral.” The authors found the cassiterite from the semi-weathering sodium granite samples of the open pit in the mine, and observed the light and the flakes, and made some tests to ascertain that the cassiterite and other minerals in the rock Even the relationship between the original distinction