仁差盆地凝灰岩风化壳离子吸附型稀土矿成矿特征

Metallogenic characteristics of ion adsorption rare earth ore in tuff weathering crust in rendifferential Basin

笔者通过仁差盆地凝灰岩风化壳离子吸附型稀土的地质调查、钻探施工等工作,对该区的稀土矿成矿地质背景、矿床地质特征进行研究,重点探讨凝灰岩型稀土矿的成矿特征及控矿因素。依据凝灰岩风化壳离子吸附型稀土矿的地质特征、控矿因素、富集规律等,认为矿体主要赋存于近地表处的凝灰岩全风化层及半风化层的上部,产于凝灰岩风化壳中;并对稀土元素在风化壳垂直剖面的分布特点和富集规律进行了总结。

Based on the geological survey and drilling work of ion adsorption rare earth in tuff weathering crust of Rencha basin,the author studied the geological background and geological characteristics of rare earth deposits in this area,focusing on the metallogenic characteristics and ore controlling factors of tuff type rare earth deposits.According to the geological characteristics,ore controlling factors and enrichment law of ion adsorption rare earth ore in tuff weathering crust,it is considered that the ore body mainly occurs in the upper part of tuff completely weathered layer and semi weathered layer near the surface,and occurs in tuff weathering crust;The distribution and enrichment of rare earth elements in the vertical section of weathering crust are summarized.