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一、地质情况概述该矿在燕山运动之后,岩浆上升,充填于前泥盆纪变质岩系以张力为主的张剪力复合裂隙中,形成了以钨锰铁矿为主的石英脉薄矿体急倾斜金属矿床。矿脉厚度一般从0.3～0.6公尺,倾角从75～85°,矿脉垂直及水平方向,呈分支复合、膨大、缩小、尖灭,侧出等现象。成矿后,矿脉上盘一公尺至二公尺有一组大致平行走向之破碎带,另外一组断层与矿脉近于垂直,位移从几公分至几公寸,节理不发育。钨平均品位为1.5％,伴生金属及非金属矿物达数十余种。本矿矿体较薄,且倾斜急陡,故90％以上均采用
I. Overview of Geological Conditions After the Yanshanian movement, the magma rose and filled the tension-dominated tensile-shear composite fracture in the Pre-Devonian metamorphic rocks to form a thin vein of quartz veins, mainly of wolframite Steep tilt metal deposits. The thickness of the veins is generally from 0.3 to 0.6 meters and the dip angle is from 75 to 85 degrees. The vertical and horizontal veins of the veins are branch-complexed, swollen, narrowed, pinched out and flared sideways. After mineralization, the veins on the plate from one meter to two meters have a group of roughly parallel to the crushing zone, another group of faults and veins near vertical, displacement from a few centimeters to several inches, joints are not developed. The average grade of tungsten is 1.5%, with dozens of associated metal and nonmetallic minerals. The ore body is thin, and steeply steep, so 90% are used above