福建周宁芹溪银矿床成矿模式的探讨

Discussion on the Metallogenic Pattern of Qinxi Silver Deposit in Zhouning County, Fujian Province

福建周宁芹溪银矿床处于区域上有利的成矿部位。经过地质找矿普查发现6号主矿化蚀变脉地表有规模较大、矿化较强的银矿（化）体出露，但认为其倾向和与其相随的流纹斑岩脉相反，钻孔揭示证明，其深部矿化规模小、强度弱、矿体产状与地表差距较大。在16号主矿化蚀变脉中发现有含矿隐爆角砾岩脉出露。经过综合研究认为：6号主矿化蚀变脉倾向应为与其相随的流纹斑岩脉相同，隐爆角砾岩的成因与流纹斑岩脉的侵入有关。并总结了矿床的成矿模式。

The Qinxi silver deposit in Zhouning County is located at the profitable position of mineralization in the regional geological setting. By prospecting, it was discovered that the No. 6 main mineralized vein is widely exposed in the surface and the tendency of the mineralized orebody is contrary to the vein of accopanying rhyolite poyphyry. According to the geologic records of the drill hole, the scale of the silver body is smaller and the mineralization is inferior in depth. There is cryptoexplosive breccia veins in the No. 16 main mineralized vein. It is considered that the No. 6 main mineralized vein has the same tendency as the vein of the accopanying rhyolite poyphyry, and the genesis of the mineralized cryptoexplosive breccia vein is related with the intrusion of the rhyolite poyphyry. Finally,the metallogenic pattern is present in this paper.