广西箭猪坡铅锌锑多金属矿床矿液运移及矿体侧伏方向研究

Ore fluid migration and orebody pitch direction of Jianzhupo Lead-Zinc-Polymetallic deposit,Guangxi

箭猪坡铅锌多金属矿床是桂西北丹池成矿带南段五圩矿田中规模最大、特征最为典型的一个大型矿床,矿体的产状和形态严格受NNW向断裂控制。文章以构造特征及其控矿作用为主线,查明矿体空间分布规律,根据测量和计算含矿断面擦痕产状、含矿共轭节理交线产状,并通过化探异常特征以及流体包裹体等研究,提出区内成矿流体来自NE方向深部,矿体向NE方向侧伏,五圩背斜拐弯部位的NE翼以及已知矿体的NE方向是今后找矿方向。

Jianzhupo lead-zinc polymetallic deposit is the largest and most typical one in Wuxu ore field, which is located in southern part of Danchi metallogenic belt, northwest of Guangxi. The ore body occurrence is strictly controlled by NNW trending faults. Based on the tectonic characteristics and its role for ore controlling, ore spatial distribution characteristics have been found out in this paper. In addition, according to the measurements and calculations about the occurrences of ore-bearing fault scratches and conjugate joints, and the study results on geochemical mineralization anomaly and fluid inclusion, etc, it can be concluded that ore-forming fluid came from the deep of NE trend, the pitch direction of orebody is NE trending, and the turning position of NE trending wing of Wuxu anticline and the NE trend of current ore body are target for future exploration.