The chemical variation of the volcanics are controlled by both residual of plagioclase in the melting source area and crystal fractionation of biotite after magma formation.
认为火山岩的成分分异受斜长石在岩浆源区熔融残留和岩浆形成后黑云母的结晶分离双重控制。
The REE enriched residual melt penetrated into the top of intrusion would be the products of nepheline syenite magma produced in the process of differentiation.
稀土元素矿床是霞石正长质岩浆分异残余熔体的产物，侵位于岩体最高层位。
The REE enriched residual melt penetrated into the top of intrusion would be the products of nepheline syenite magma produced in the process of differentiation.
稀土元素矿床是霞石正长质岩浆分异残余熔体的产物，侵位于岩体最高层位。
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