贵州水城-纳雍地区峨眉山玄武岩风化壳离子吸附型稀土矿床地质特征及资源潜力

通过对贵州水城—纳雍地区峨眉山玄武岩风化壳离子吸附型稀土矿床的风化壳结构、矿体垂向变化特征的综合研究，总结了矿床特征、风化壳特征、区域成矿条件。风化壳中全风化层是稀土矿富集最好的层位； (La/Yb)N、ΣLREE/ΣHREE比值较高，属于强轻稀土富集类型。严格受母岩、地形、气候、地层、构造等因素共同作用。稀土矿床具备分布面广、埋藏浅、厚度大、品位高等地质特征。可以指导贵州西部地区寻找同类型大型稀土矿产地。

Geological characteristics and resource potential of ion adsorption rare earth deposits in weathering crust of Emeishan basalt in the Shuicheng-Nayong area, Guizhou

Based on the comprehensive study of the structure of weathering crust and the vertical variation of ore bodies in ION-ADSORBED rare earth deposits of Emeishan basalt in Shuicheng-Nayong area, Guizhou Province,China,the authors have made a comprehensive study of the structure of weathering crust and the characteristics of vertical variation of ore bodies.,The characteristics of ore deposits,weathering crust and regional metallogenic conditions are summarized.The total weathering layer in the weathering crust is the best one for enrichment of rare earth minerals;(La/Yb)N,LREE/HREE ratio is higher,It belongs to the enrichment type of strong and light rare earth.Strictly affected by parent rock,topography,climate,stratum,structure and other factors.Rare earth deposits are characterized by wide distribution,shallow burial,large thickness and high grade.It can guide western Guizhou to search for similar large-scale rare earth mineral deposits.