引言中朝古陆范围内所发现的铝土矿矿床,处于与地球上很多地方的铝士矿矿床的环境很相似的地质条件下。这就是:铝土矿矿床产在喀斯特化的灰岩上,贼存在地层间断之中,其上复盖着代表海侵岩系的灰岩。游离氧化铝的造岩矿物的矿物成分为一水軟铝石和一水硬铝石,使此处的铝土矿矿床与最大的铝土矿区 Introduction Bauxite deposits found in the context of the Sino-North Korea ancient land are in geological conditions very similar to those of the aluminiferous deposits in many parts of the world. This is: Bauxite deposits are produced on karst limestones, with thieves present in stratigraphic discontinuities, covered with limestone that represents transgressive rocks. The mineral components of the free-alumina rock-forming minerals are boehmite and diaspore, which together with the largest bauxite deposit