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美国田纳西州的锌公司目前开采的是闪锌矿。矿体很大,呈分支状。矿石在水平方向上分布,其品位和垂直厚度都很不规则。虽然在183米的垂高范围内均发现锌矿,但可采总厚度仅有76.24米,而且矿石的分布是分散的。仅少数地区的矿石是连续分布的,其厚度在45.7米以上。美国锌公司在该区有四个生产矿井,日产6350吨。其中最老的是2号矿,是从1916年
The zinc company in Tennessee currently mines sphalerite. Large ore body, was branched. Ore distribution in the horizontal direction, the grade and vertical thickness are irregular. Although zinc is found within a vertical height of 183 meters, the total thickness available is only 76.24 meters and the distribution of ore is dispersed. Only a few areas of the ore is continuous distribution, the thickness of 45.7 meters above. U.S. zinc company has four production mines in the area, producing 6,350 tons per day. One of the oldest is No. 2 mine, from 1916