粤北石人嶂钨矿成矿机理及成矿构造背景

Ore-forming Mechanism and Tectonic Setting of Shirengzhang Tungsten Ore

石人嶂钨矿地处南岭钨锡成矿带中段,整个南岭地区原始地层的高钨含量为本区成矿作用提供了物质准备,多期次的花岗质岩浆活动使钨元素进一步富集。在燕山期,整个南岭地区构造应力环境转化为碰撞后的拉张松驰阶段,提供了一个开放的成矿体系,形成一系列导矿断裂和容矿构造,随着幔源物质的活动参与及陆壳重熔型花岗岩的分异演化,含矿热液流体沿导矿断裂上升运移,充填至各类容矿构造中,石人嶂地区在燕山中期发生大规模成矿作用。

Shirengzhang tungsten mine was located in the middle section of Nanling mineralization area. The high tungsten content of the primitive stratum in Nanling area offers a source for mineralization. The multi-periodic granite-magmatism leads to rich collection of tungsten element. In Yanshan geological period, structural stress environment changed to the extensional phase of post-collision, which provided an opening mineralization system. Along with the participation of the mental-derived magmatism and the differentiation and evolution of crustal remehing type granite in mid-Yanshan geological period, cosmically mineralization took place in Shirengzhang Zone.