治岭头地区金银矿地质特征及矿床成因

治岭头地区金银矿为浙江省内唯一的大型金银矿床。矿石矿物有银金矿、金银矿、辉银矿、碲银矿、辉铅铋银矿,少量黄铁矿、方铅矿、闪锌矿、黄铜矿。矿石结构构造为交代残余结构、填隙结构、乳滴状结构、致密块状构造、条带状构造、环带状构造。主要载金矿物为黄铁矿、石英。围岩蚀变为硅化、绢云母化、绿泥石化、黄铁矿化、方解石化、蔷微辉石化。硫同位素:1.47～10.57‰、硅同位素为:-0.1～-0.4׉。成矿温度287.5～260.4℃。成矿物质为多源,矿质聚集为多阶段的燕山中、晚期中温火山热液矿床。

Geological Characteristics and Genesis of Zhilingtou Au-Ag Deposit

Zhilintou Au-Ag deposit is the only large Au-Ag deposit in Zhejiang Province,of which minerals consist of electrum,argentite,petzite,maldonite and a little pyrite,galena,sphalerite,chalcopyrite,and is characterized by replacement relict,fissure-filling,etch,massive,concentric.Its minerals of gold carrier are pyrite,quartz.The wall rock alterations are silicification,sericitzation,chloritization,pyritizion,calitization,rhodonite.The mineralize temperature ranges from 287.5 to 260.4℃.δs is 1.47 to 10.57‰,δ30Si-0.1 to-0.4‰.Metallogenic materials are multi-sources,the mineral gather has many phases deposit of mid-term late Yanshanian volcanic-hydrothermal deposit.