Abstract
A Short Review on REE Recovery from Ion-Adsorption Clays
Highlights
Rare Earth Elements (REEs: La-Lu Plus Y and Sc [1]) are known to be enriched in the melt mantle during magmatic differentiation. They can be enriched in the granitoids through the accumulation of REE-bearing minerals such as apatite, allanite, monazite, titanite and xenotime, since they tend to remain in the melt until the late stages of magmatic differentiation [2]
REE resources can be divided into two categories: primary deposits associated with igneous and hydrothermal processes and secondary deposits concentrated by sedimentary processes and weathering
Simple divalent electrolyte solution such as (NH4)2SO4 are capable to extract the significant amounts of REEs absorbed on clay minerals such as kaolinite, halloysite and montmorillonite at room temperature cause of REEs accumulation in ion-exchangeable phase of ion-adsorption REE deposits
Summary
Rare Earth Elements (REEs: La-Lu Plus Y and Sc [1]) are known to be enriched in the melt mantle during magmatic differentiation. They can be enriched in the granitoids through the accumulation of REE-bearing minerals such as apatite, allanite, monazite, titanite and xenotime, since they tend to remain in the melt until the late stages of magmatic differentiation [2]. Rare earth deposits are formed by different geological processes in deep-seated intrusive environment, magmatic–hydrothermal environment, and surface weathering environment.
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