Sublattice solid solution model and its application to orthopyroxene (Mg,Fe)2Si2O6期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Sublattice solid solution model and its application to orthopyroxene (Mg,Fe)2Si2O6

Authors:

Affiliation:

1. Planetary Geochemistry Program, Department of Mineralogy and Petrology, Uppsala University, P.O. Box 555, S-75122, Uppsala, Sweden
2. Division of Physical Metallurgy, Royal Institute of Technology, S-10044, Stockholm, Sweden

Abstract:

The theory of sublattice solid solution model and optimization methods have been described for modelling the geochemically important multicomponentmultisite silicate solid solution systems. Some new X-ray Mg-Fe²⁺ site occupancy data along with some selection from the existing data on heated orthopyroxene in the temperature range 600 to 1000° C have been used in thermodynamic modelling of the orthopyroxene (Mg, Fe)₂Si₂O₆ solid solution using the sublattice solution model. The optimized interaction energy solution parameters are:

$L_{{text{Mg,Fe}}}^{{text{M1}}} = 13600.7 - 4.92650 * T$

Keywords:
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