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到1966年底为止,(加拿大大奴湖滨的)杰安特·耶洛奈夫金矿已生产了大约540万吨矿石,平均品位0.75盎斯/吨.选厂从1948年夏开始生产时,日处理量为250吨,到1958年已增加到800吨.1959年以来,每日的采选矿石量已略高于1000吨.现在的储量(包括附近的各矿山)估计为250万吨,平均品位0.67盎斯/吨.绿泥石和绢云母带中不规则的、透镜状的和脉状的矿体的规模、形态和产状都是极其多变的(图1).采场的长度可由50英尺到400英尺,宽度由10英尺以下到100英尺以上.片岩带横切一组向西陡倾的火山岩.虽然片岩带的叶理是陡倾或直立的,但它的各组岩相可能向东西方向作较缓或较陡的倾斜.总的看来,这一岩带是一个有倾伏背斜和向斜的折皱了的地层单元.
By the end of 1966, the Geant Yellowknife Mine (on Lakeshore, Canada) has produced about 5.4 million tonnes of ore at an average grade of 0.75 oz / t. The plant was started production in the summer of 1948, With a capacity of 250 tonnes and an increase to 800 tonnes by 1958. Daily ore reserves have been slightly above 1,000 tonnes since 1959. Today’s reserves, including the nearby mines, are estimated at 2.5 million tonnes, on average Grade 0.67 oz / tonne The irregular, lenticular and vein-shaped ore bodies in chlorites and sericites are extremely variable in size, shape and shape (Figure 1). The stope length can be determined by 50 feet to 400 feet and widths from less than 10 feet to more than 100 feet.The schist belt traverses a group of volcanic rocks steep westward.Although the schist belts are steep or erect, A gentle or steep slope to the east and west, generally speaking, is a rugged anticline and syncline, folded unit.