福建连江溪利伊利石矿矿床地质特征

福建连江溪利伊利石矿呈脉状产出，矿石可分３种类型：即伊利石型、黄铁矿伊利石型、石英伊利石型，以石英伊利石型为主，矿石中普遍含有黄铁矿。矿体受北东向断裂控制，由火山岩经过热液交换形成。

Features of the Illite Deposit in Xili Lianjiang, Fujian Province

The Xili Illite Ore in Lianjiang, Fujian Province, occurs as veins. Three types of illite ores have been found,which are the illite type,the pyrite-illite type and the quartz-illite type.Of these, the quartz-illite is the dominant type though pyrites exit in all of the three types.The ore bodies are controlled by the NE orientated faults. The evidence shows that the illites formed by hydrothemal metasomatism of the volcanic rocks. The further metasomatismproduces the pyrophyllite.