ABSTRACT
Physical properties of silicate glasses are of specific interest in mineral physics with respect to the relation to structure. However, this relation is cryptic because of the difficulty to access the glass structure per se. This paper discusses elastic moduli of binary alkali silicate glasses from the literature and new experimental data of glasses in the systems SiO2-Fe2O3Li2O and SiO2-Fe2O3-Na2O. With the focus on how these properties relate to glass structure, it is shown that a comparison to calculation (method of Makishima and Mackenzie) and to data from Mössbauer spectroscopy provide useful constraints.
