都匀牛角塘锌矿田控矿条件及成矿模式探讨

Discussion on the Controls and the Model of Mineralization at Niujiaotang Zn Deposit

本文根据牛角塘锌矿田的地质背景，初步讨论了该矿田成矿控制的地质构造条件；并利用同位素地球化学资料，对矿床成因进行了探讨；最后建立了该矿田的描述性成矿模式。

Basing on the geological setting and the isotope geochemical data at Niujaotang Zn deposit and its periphery, the authors approach the controls and the genesis of the deposit and consider that the host strata are the Qingxudong formation of the Lower Cambrian,the Shilengshui formation of the middle Cambrian and the Loushanguan group of the middle-upper Cambrian; that the Zn mineralization is associated with remobilization of the fossil fracture; and that the deposit belongs to a stratabound epithermal one. Finally, a descriptive metallogenic model has been established.