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一、矿床地质特征 我省钨矿均属高温热液裂隙充填黑钨——石英脉急倾斜的薄矿脉。按矿区储量计算呈单独矿脉产出者只占少部分,而大部分矿脉是成群产出,其中又有大脉群和细脉带两种形态。大脉群又占多数,成近似平行状,脉幅较大,脉间距离也较大,一般的脉幅0.05——3米,围岩间距0.5——15米。不少矿山又有南、中、北三组,组间距离70——350米,细脉带呈网状或密集平行状产出,脉幅小间距也小。单独矿脉和大脉群在水平和垂直方向均呈现分枝复合、膨胀收缩、尖灭侧现、侧伏等现象。矿脉走向近乎东西的居多,南北方向的也有,脉群走向长度一般500——1000米,延深200——800米,倾角60°——85°,个别有50°左右或90°。脉钨矿床一般的有上部(或边沿)分散稀疏,下部(或中间部位)收敛逐渐靠拢的特征。
First, the geological characteristics of the deposit Tungsten ore in our province are high-temperature hydrothermal fissure filling black tungsten - quartz vein steep thin veins. According to the ore reserves calculation, it is only a small part of the output of individual veins, while most of the veins are the output of herds. Among them, there are two kinds of patterns: the veins and veins. Macrophytic group also accounts for the majority, into an approximately parallel shape, larger pulse width, pulse distance is also larger, the general pulse of 0.05 - 3 meters, the distance between the surrounding rock 0.5 - 15 meters. Many mines have south, middle and north three groups, the distance between the groups of 70 - 350 meters, fine veins were reticular or dense parallel output, small pulse spacing is small. Individual veins and maxillary groups in the horizontal and vertical directions showed branched compound, expansion and contraction, pinch out the side of the current side of the phenomenon of lateral volt. Veins to almost the majority of things, there are also north and south direction, the pulse group to the general length of 500-1000 meters, 200-200 meters deep, dip 60 ° - 85 °, each with about 50 ° or 90 °. Veins tungsten deposits generally have upper (or edge) sparsely dispersed, the lower (or middle part of the convergence of the gradual closure features.