几内亚共和国红土型铝土矿床成矿探讨  

STUDY ON THE METALLOGENETIC PROCESS OF LATERITIC BAUXITE IN GUINEA REP.

作　　者：张成学[1] 王国库[1] 张泽夏[1] 张璜[2] 

机构地区：[1]河南省地矿局地矿二院,河南郑州450001 [2]河南省地矿局第四地质矿产勘查院,河南郑州450001

出　　处：《化工矿产地质》2015年第1期11-19,共9页Geology of Chemical Minerals

摘　　要：在全球广泛分布着中生代(Mz)基性岩浆岩,但由此形成的风化残积红土型铝土矿床主要集中在低纬度带。也就是说,除成矿母岩外,低纬度带的自然气候环境是红土型铝土矿成矿的另一决定性因素。但在低纬度带的成矿母岩分布区域内,是否成矿或矿体的优劣,取决于矿源层的厚薄、地形地貌特征以及水文地质条件等。铝土矿的形成过程,是自成矿母岩风化初始阶段至红土形成阶段,铝铁物质逐渐富集的过程。There is widely distributing Mesozoic basic igneous rock in the global,but the resulting weathered residual lateritic bauxite deposits are mainly concentrated in low-latitude belt.It means that the natural climate of low-latitude belt is another decisive factor for the mineralization besides host rock.In the area of host rock,the mineralization depends on the thickness of parent rock,topography features,and hydrological and geological conditions.The formation of bauxite is the gradual accumulation process of Fe-Al material from weathering of host rock to laterite.

关 键 词：地质特征 自然地理环境 控制因素 富集规律 

分 类 号：P618.45[天文地球—矿床学]