(一)地质概况矿体基本上为伟晶岩脉体,在长约1300米、宽400～500米的矿化带内,有开采价值的矿脉有13条,由南向北近于平行排列,脉间距离20～90米,走向北东60～80°,倾向北西,平均倾角60～65°,平均厚度6～9米。矿体赋存在外接触带附近的板溪群片岩中。围岩为二云母石英片岩,片理发育,向南倾斜,倾角60°,斜切伟晶岩矿脉产出,接触面明显,容易脱离。后期主断裂(IF)位于矿体下部,对本 (A) Geological Overview The ore body is basically pegmatite veins, in the mineralization belt of about 1,300 meters in length and 400 to 500 meters in width, there are 13 ore veins with exploitation value, arranged in parallel from south to north , The pulse distance of 20 ~ 90 meters, to the north east 60 ~ 80 °, northwest tendency, the average inclination of 60 ~ 65 °, the average thickness of 6 ~ 9 meters. Ore bodies exist in the outer contact zone near Banxi group schists. Surrounding rocks are two mica-quartz schist which are developed in the extensional direction and inclined southward with a dip angle of 60 °. The pegmatite veins are produced obliquely and the contact surface is obvious and easily detached. The later main fault (IF) is located in the lower part of the orebody