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扎伊尔北部地区采金70年,金属的总产量约为350吨,其中半数采自近代砂矿。所有的矿床均与火山—沉积岩系有关,并与构成扎伊尔北部花岗岩—绿岩地区的花岗岩类体伴生。实际的成矿构造是剪切构造,或产生石英脉或无英板状矿床。因此,经济价值不高的矿化带的原生层控(或岩石类型控制)特征不太明显。太古代的岩浆活动和前寒武纪的构造活动控制了金的富集。该文有以下几个内容:
70 years of gold mining in the northern Zaire region, the total output of about 350 tons of metal, of which half were collected from modern sand. All the deposits are related to volcanic-sedimentary rocks and are associated with granitoids forming the granite-greenstone area of northern Zaire. The actual metallogenetic structure is shear structure, or produce quartz vein or non-platelet deposits. Therefore, the characteristics of primary stratigraphic control (or rock type control) of mineralized zones with low economic value are not obvious. Archean magmatic activities and Precambrian tectonic activities controlled the enrichment of gold. This article has the following contents: