铝土矿是表生风化作用的最终产物,无论是红土型、喀斯特型还是异地沉积型铝土矿,在成矿过程中,原岩中的矿物都会发生不同程度的蚀变,并伴随着碱金属和碱土金属元素的迁出和难溶元素(如Al、Ti、Nb、Ta、Zr、Hf等)的富集沉淀(karadag et al.,2009),由于成矿物质来源的不同、或是形成环境的差别,表现出铝土矿颜色、结构、构造及元素地球化学性质等方面的不同。笔者在贵州清镇 Bauxite is the final product of superficial weathering. Whether in the lateritic, karstic or off-site sedimentary bauxite, the minerals in the original rock undergo alteration to some extent during the process of metallogenesis, accompanied by alkali Precipitation of metals and alkaline earth elements and enrichment precipitation of refractory elements such as Al, Ti, Nb, Ta, Zr, Hf, etc. (karadag et al., 2009), due to different sources of mineralization or The difference between the formation of the environment, showing the bauxite color, structure, structure and elemental geochemical properties and other aspects of the difference. I Qingzhen in Guizhou