Thermodynamic analysis of quadrilateral pyroxenes
Thermodynamic analysis of quadrilateral pyroxenes
复制标题
四边形辉石的热力学分析
DOI：
10.1007/bf00374694
复制
发表时间：
1985
影响因子：
3.5
通讯作者：
P. Davidson
中科院分区：
文献类型：
--
作者：
P. Davidson
本文从下列假设出发，建立了四边形辉石溶液的热力学模型：（1）在M1和M2位上发生Fe和Mg的非会聚阳离子无序;（2）Ca完全分配到M2位;（3）单斜辉石不混合成高Ca+低Ca相。该三元模型是Thompson（1969，1970）二元模型的扩展。模型表达式描述阳离子分布，交换平衡和化学势的三元和四边形组件。
A thermodynamic model for quadrilateral pyroxene solutions, is developed from the following assumptions: 1) Non-convergent cation-disorder of Fe and Mg occurs over the Ml and M2 sites; 2) Ca is partitioned completely into the M2 site; and 3) Clinopyroxenes unmix to a high-Ca plus low-Ca phase. This ternary model is an extension of Thompson's (1969, 1970) binary model. Model expressions are presented that describe cation distributions, exchange equilibria and chemical potentials of both ternary and quadrilateral components.