山东西涝口金矿地球化学特征研究

西涝口金矿位于胶莱盆地北缘，且盆缘断裂发育。其中，大庄子-蓬家夼层间滑脱断裂为重要的控矿、赋矿构造。前期，在该区开展了大量的地质和物化探工作，并取得了显著成果，该区的地质找矿工作也不断取得突破。本文统计了18号脉不同岩性的样品分析结果，并进行因子分析和垂向分带序列研究，认为该区金矿化具有多期性特点，至少有2次与Au有关的热液活动，且18号脉深部头晕元素As与尾晕元素Bi及近矿晕元素Pb、 Ag相互叠加，显示深部有较好的找矿前景。同时，对其他矿脉的预测找矿也具有重要的意义。

Study on Geochemical Characteristics of Xilaokou Gold Deposit in Shandong Province

Xilaokou gold deposit is located on the north edge of Jiao-Lai basin and the basin-margin fractures are developed.Thereinto,Dazhuanzi-Pengjiakuang interlayer gliding fracture is an important ore-bearing and ore-con- trolling structure.Ream work has been carried on in earlier stage.Fruitful results have been achieved.Geological prospecting is getting breakthrough in this area.Test results of different lithology in vein 18 have been analyzed in this paper.Factorial analysis and study of vertical zoning series have been employed.By this ,the author believes that gold mineralization of this area is with multiple-stage feature.At least two times of hydrothermal activities oc- curred.The upper halo element As, lower halo element Bi and near halo element Pb, Ag are superimposed each oth- er in depth of No.18 vein.It shows better ore-finding prospective in deep.It is also with important significance for forecasting other ore vein.