Thermodynamics of liquid silicates, a preliminary report

Yan Bottinga (1) , P. Richet (1)

1 IPGP - Institut de Physique du Globe de Paris

We propose a model for the calculation of the thermodynamic properties of silicate liquids. In our model we make use of the Flory-Huggins regular solution formalism for liquid solutions. In this preliminary paper we have limited ourselves to demonstrating that the Flory-Huggins formalism describes satisfactorily the thermodynamic properties of simple liquid silicate solutions, i.e. systems in which only end-member components or solid solutions thereof occur as solid phases and where there is only one well-behaved liquid phase. To compare theoretical results with laboratory observations we need thermodynamic data for liquid silicates. For this reason we have included in this report a review of the available information on the latent heat of fusion of silicate minerals.

Domaines: Planète et Univers [physics]

Yan Bottinga, P. Richet. Thermodynamics of liquid silicates, a preliminary report. Earth and Planetary Science Letters, 1978, 40, pp.382-400. ⟨10.1016/0012-821x(78)90161-9⟩. ⟨insu-01442337⟩