【摘要】 公式CLi=F为岩浆结晶分异过程中的微量元素地球化学模型,但如何确定式中残余熔体的重量百分比(F)和熔体中分离出来的矿物相的总分配系数(Di)一直是个难题。本文介绍了一种直接计算出残余熔体比例(F)和岩浆结晶矿物比例(以此计算出Di)的方法———岩石学混合计算法的基本原理,以云南白马寨镍矿区煌斑岩为例,介绍了该方法在岩浆结晶分异作用研究中的应用。(Di-1)iC0,L更多还原

【Abstract】 C Li =F is a formula of minor elemental geoch emical model for magma fractional crystallization.However,It is always a difficult pro blem to define the fraction of the residual melt(F)and total partition coeffi-cient (D i )of the separated mineral phase.In th is paper,we have introduced the prin ciple of petrological mixing calculation which can directly calc ulate the parameter of F and D i ,and it is applied to lamprophyres in the Bai-mazhai nickel deposit,Yunnan Province to prove there are fractional cry stallization during its magma evolu tion.更多还原