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饵钓多金属矿位于日本秋田县大馆市东南4公里,是同和矿业公司最近新建的一个现代化地下矿山。矿区于1975年普查,1976年7月钻探见矿,先后共打钻138个,总长71574米。1977年10月开始基建,1979年10月投产。设计产量12万吨/年,规模虽小,但机械化程度较高,地下全部采用无轨运输。 矿体埋藏深度300米,底盘为稳固的英安岩,顶盘为不稳固的凝灰角砾岩。矿体似层状,倾角10°,平均厚6米,水平分布面积长约500米,宽300米。矿石属“黑矿”类型,是一种含多种金属硫化物的粘土质黄铁矿,松软破碎。矿石储量共约300万吨,平均品位:铜0.89％,铅3.32％,锌10.1％,金1.2克/吨,银120克/吨。
Baitailu polymetallic ore is located 4 kilometers southeast of Tarim City, Akita Prefecture, Japan. It is a modern underground mine recently built by Tonghe Mining Company. The mine census in 1975, drilling in July 1976 saw the mine, has hit a total of 138 drill, total length of 71,574 meters. Infrastructure started in October 1977, put into operation in October 1979. Design output of 120,000 tons / year, the scale is small, but a higher degree of mechanization, underground all using trolley transport. Buried depth of 300 meters ore body, the chassis is a solid dacite, the roof is not stable tuff breccia. Ore body like stratified, dip 10 °, the average thickness of 6 meters, horizontal distribution area of about 500 meters long and 300 meters wide. Ore is a “black ore” type, which is a clay pyrite containing a variety of metal sulfides that is soft and crushed. Ore reserves of about 3 million tons, the average grade: 0.89% copper, lead 3.32%, 10.1% zinc, gold 1.2 g / t, silver 120 g / t.