常宁市大义山狮形岭锡矿区地质特征及找矿方向

Geological Characteristics and Prospecting Direction of Shixingling Tin Mine Area, Dayishan, Changning

大义山狮形岭锡矿区控矿因素是复杂多样化的,属于与大义山汤市铺超单元岩体的多期、多阶段脉动侵位、演化有关,并受构造控制的岩浆热液中高温矿床。中侏罗世汤市铺超单元是区域内锡矿主要成矿、赋矿岩体,北东向、北西向组断裂为矿区主要赋矿构造,岩石的自变质作用和围岩蚀变加强了矿体的形成。成矿主要受构造、岩浆岩及蚀变三种因素共同控制。

The ore-controlling factors in Shixiangling tin deposit in Dayishan are complex and diverse.It belongs to the high-temperature magmatic hydrothermal deposit related to the multi-stage and multi-stage pulsation emplacement and evolution of Tangshipu superunit rock mass in Dayishan and controlled by tectonics.Tangshipu superunit in Middle Jurassic is the main ore-forming and ore-hosting rock mass of tin deposits in the region.The NE and NW faults are the main orehosting structures.The self-metamorphism of rocks and alteration of surrounding rocks strengthen the formation of ore bodies.Mineralization is mainly controlled by three factors:structure,magmatic rock and alteration.