Geological characteristics of red clay type bauxite deposits in Guinea

Guinea is rich in mineral resources of bauxites,the bauxite resources are characterized by wide distribution,high grade,high content of aluminum and iron,low content of silicon,easy exploitation and beneficiation,belonging to hydrargillite-enriched red clay type bauxites.The ore-bearing rock formations in the area are the weathered eluvial type silicon,aluminum and iron weathered crusts,the main ore types are of honeycomb,earthy and massive structures.The ore bodies mostly lie at the topes and moderate-gradient slopes of mountainous areas,whereas in the flat grounds,ditches and valleys,the ore bodies are of low grade or even absent.The tropical climate in Guinea is characterized by damp and hot,great rainfall and alternation of arid and wet climates,providing beneficial conditions for the formation of red clay type bauxites.The wide distributed high aluminum basic rocks are the mother rocks of bauxites and are also the principle premise for the formation of bauxites.The appropriate geological and geographical conditions in Guinea are favorable to the formation of the world exceptional ultra-large scale red clay type bauxite deposits.