贵州龙里铝土矿矿床成因初探

Longli in Guizhou bauxite ore Genesis

贵州龙里铝土矿为古风化壳再沉积型铝土矿。它的形成主要经历三个阶段:红土化阶段,迁移就位阶段和表生富集阶段。其受岩溶盆地的大小、形状,底部起伏等情况控制,一般在岩溶凹洼地段,厚度加大,矿体较富;反之,厚度变薄,矿体较贫,甚至无矿。

longli bauxite in Guizhou Province is an ancient weathering crust sedimentary bauxite. It mainly experienced three stages： laterization,migration position and supergene enrichment. It is controlled by condition of the karst basin size, shape, con trol at the bottom of the ups and downs, and so on and so forth, generally in concave karst depressions, thickness increase, the orebody is rich; On the other hand, the thickness of thin, ore body is poor, even not mine.