浙江治岭头矿田地球化学特征的研究

Study on Geochemical Characteristics of Yelingtou Orefield in Zhejiang

治岭头矿田位于绍兴-龙泉金银、铜、铅锌、钼成矿带的西南部，长期以来，存在变质热液^[1]、火山热液旧^[2]、变质热液火山活动叠加^[11]、沉积改造^[3]等成因的看法；铜、铅锌、钼成矿与火山活动有关的认识比较一致。矿田内浙江最大的金矿山——遂昌金矿，现为危机矿山，目前正在开展危机矿山接替资源勘查工作，通过对矿田不同矿床和地质体的稀土、铅同位素、稳定同位素、同位素年代学等地球化学资料对比研究，明确了治岭头矿田的成矿时间在82．5～164Ma，金银矿床是燕山期火山活动期间形成的，矿田内的矿化与燕山期多期次的中酸性火山火山活动关系密切，接替资源勘查和研究的重点应是火山活动有关的构造和地质体。

Yelingtou orefield is in Shaoxing-southeast of Longquan gold, silver, copper, lead, zinc and molybdenum metaliogenic belt. There have long been different views about the genesis as metamorphic hydrothermal solution, volcanic thermal, metamorphic hydrothermal solution superposed by volcanic activity, or depositing-reworking types, and there is a rather identical view that copper,lead, zinc and molybdenum metallogeny is related to volcanic activity. The largest gold deposit in Zhejiang in the orefield-Suichang Gold Mine is now a crisis mine, where the exploration work for alternative resource for the crisis mine is being carried out. Through the comparative study on the geochemical data including the rare earths, lead isotope,stable isotope and isotope chronology of the different deposits and geological bodies in the ore field,it is made clear that the metaUogeny of Yelingtou orefield was during 82.5 - 164 Ma,gold-silver deposits were formed during the volcanic activity of Yanshan Period, and the ore-forming is closely related to the multi-stage medium acidic volcanic activity in Yanshan Period. The major points in the exploration and study for alternative resource should be those structures and geological bodies related to volcanic activity.