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地质恩昌加铜矿为北罗德西亚英美公司所属的四个矿山之一。该矿于1960年产铜176799吨;选矿厂处理的矿石量为4357127吨,矿石品位为5.37%;巷道掘进米数达57885米;露天剥离量为3800000立方米;每天排水量达6800万升;工人总数为7503人。该矿所产矿石主要来自恩昌加西矿体、恩昌加露天矿和钦戈勒(Ghingola)露天矿。恩昌加矿体产生于下布瓦纳-姆卡瓦(lower Bwara Mkubwa)沉积岩岩系的某些岩层内,而沉积岩不整合于前塞武纪老岩上。图一所示为恩昌加向斜构造的典型地质剖面图。水成岩褶皱为一东西光轴面不对称的向斜构造。恩昌加西矿体位于向斜构造的南翼,倾角15°—25°,平均厚度24.4米。矿石所含主要矿物为
Geology Enchang plus copper North Rhode West British and American companies owned by one of the four mines. The mine produced 176,799 tons of copper in 1960; the beneficiation plant processed 4357,127 tons of ore and the grade of ore was 5.37%; the number of roadway tunneling meters reached 57,885 meters; the amount of open-air stripping was 38,000,000 cubic meters; the daily displacement reached 68 million liters; workers The total number of 7503 people. The ore produced from the mine is mainly from the Enshang Garcia orebody, the En Changga open-pit mine and the Ghingola open-pit mine. The Enchang plus orebodies are found in some of the strata of the Lower Bwara Mkubwa sedimentary rock series, whereas the sedimentary rocks are not integrated with the Precambrian old rocks. Figure 1 shows a typical geological section of the Enchangjia syncline. Hydrochock folds are an asymmetrical synclinal structure with east-west axis. The Ngongchang Gaxi orebody is located on the southern wing of the syncline and has a dip angle of 15 ° -25 ° with an average thickness of 24.4 meters. Ore contains the main minerals