大厂花岗岩Sn，Cu，Zn的分配规律及成矿性评价

Distribution of Sn, Cu, Zn and Ability of Mineralization of Granite in Dachang

基于Ｎｅｒｎｅｓｔ分配定律。本文对广西大厂矿田花岗岩成岩过程中Ｓｎ，Ｃｕ，Ｚｎ的分配规律进行了分析研究．结果表明，该花岗岩主要成岩阶段Ｓｎ，Ｃｕ，Ｚｎ趋于分散，不利成矿；晚期岩浆阶段Ｚｎ，Ｃｕ有一定的成矿性，但不利形成超大型矿床．

Based on the Nernest distribution law, the distribution of Sn, Cu, Zn in rock-forming and ore-forming processes of granites in Dachang ore-field is studied in this paper. The results show that during the main rock-forming siege Sn, Cu, Zn disperse mainly in minerals and are non-benefical to mineralization.At the late stage, Sn, Cu and Zn are distributed in residual magma and possess the ability of mineralization, but they are not able to form mege-supermege type deposits.