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从世界范围研究锂氟花岗质岩石发现有三端元组分,即富Na的翁岗岩(O)、富K的香花岭岩(X)和富Si的黄英岩(T)三端元,提出区分三端元的三角图和划分标志。该类岩体垂直分带表现出三端元O→X→T变化规律,反映在化学成分和标准矿物上,有随F含量增加,Q、C(刚玉)升高,ALK(K_2O+Na_2O)降低的趋势。根据三端元的熔体结构、粘度、密度差异和Na-K、Si-ALK分离规律,结合实验资料,认为三端元是不混溶为主的液态分离成因,与传统的分离结晶作用不同。
From the worldwide research on the lithium-fluorite granites, three-terminal components, namely Onggang (O) rich in Na, Xuanhuuling (K) rich in K and Si-rich triptychite (T) Distinguish between the three-terminal triangular map and divide the mark. The vertical zonation of this kind of rock mass shows the variation of O → X → T, which is reflected in the chemical composition and the standard minerals. With the increase of F content, the increase of Q, C (corundum), ALK (K 2 O + Na 2 O) Decreasing trend. According to the melt structure, viscosity, density difference and Na-K and Si-ALK separation rules of the three-terminal element and the experimental data, it is considered that the three-terminal element is the cause of immiscible liquid separation, which is different from the traditional separation and crystallization .