一、矿床地质概况矿床产于上泥盆统中。该岩系下部为天子岭组灰岩、泥质灰岩,常夹有碳泥质薄层,为主要含矿层;上部为帽子峰组砂岩、粉砂岩、砂质页岩和碳质页岩,其中矿化较微弱。矿区外围数公里有燕山期花岗岩,一般认为矿床的形成与该燕山期岩浆活动有关。矿区断裂构造极发育,北北东向断裂往往是大致平行地相间分布,并且把矿区分割成同方向的长条状断块。矿化主要集中在F_4逆断层的两 First, the geological prospecting Deposits produced in the Upper Devonian. The lower part of this series of rocks is limestone and argillaceous limestone in Tianziling Formation, often with a thin layer of carbonaceous sediments, which is the main ore-bearing layer. The upper part is capillaries sandstone, siltstone, sandy shale and carbonaceous shale, The mineralization is relatively weak. Yanshanian granite is located several kilometers outside the mine area, and the formation of the deposit is generally believed to be related to the Yanshanian magmatic activity. The fault structure of the mining area is extremely developed. The north-north eastward faults are often distributed in parallel with each other and the mining area is divided into strip-shaped fault blocks of the same direction. Mineralization is mainly concentrated in two of F_4 reverse faults