广西大厂超大型锡矿成矿条件与历史演化

超大型矿床的形成条件不同于一般规模矿床，有其特殊性，大厂超大型锡矿产出于华南活动地块与扬子稳定地台之间的划界性深大断裂带上，是经过多旋回构造－岩浆活动，成矿物通过沉积与岩浆作用分化的继承性积累，以及有利的围岩介质地球化学性质与特有的成矿构造等条件的综合的综合作用下形成的。

The mineralization factors and tectonic evolutionof Dachang superlarge tin deposit, Guangxi, China

Tin deposit is always formed in a tectonic active zone of the continental. Dachang and Gejiu superlarge tin deposits are situated at a boundary between Yangtze Stable Block and South China Active Block with the protractedly moving deep fault. Following the divergences and convergences of the continental basin South China Active Block, the ore forming materials were redistributed and accumulated by the evolution of depostion and magmation that are internal causes of mineralization. In other hand, the geochemical and physical roles of country rock media are the exterior presuposition for the mineralization. For these reasons, the magmatic hydrothermal theory must be comprehended to be cosisted by many stages from deposition to the late period of magmatic hydrothermal fluid and exterior cycling of drived fluid. So, the mineralization hydrothermal fluid have been come from polysource during a long time.