本矿区位于秦岭东西复杂构造带东段之路家街—冯国湾向斜南翼.区域断裂、褶皱不甚发育,为一向北倾的单斜构造,倾角一般20-30°左右,构造线方向近于东西.一、矿床地质特征矿区出露的地层主要为下震旦系巡检司组灰白色中一厚层燧石条带白云质大理岩,以及侵入于该地层中下部的燕山期花岗闪长斑岩(图1).岩体受北北西向断裂控制, The mining area is located in the south of Fengjiawan syncline in Lujiajie-Dongguojie-Dongguo-Xixi complex east part of Qinling.Regional faults and folds are not well-developed and have a monoclinic structure with a northward dip of about 20-30 °, and the tectonic line The direction is near the thing.First, the geological characteristics of the deposit The strata exposed in the mining area are mainly the lower-middle Sinian patrol divisions, the middle-thick chert of fluvial band dolomitic marble, and the Yanshanian granite intruded into the middle and lower part of the strata Diorite porphyry (Fig. 1) .The rock mass is controlled by north-northwest fault,