Abstract
The NaF effect on microlite solubility at 800°C and 170, 200, and 230 MPa is studied experimentally. The immiscibility boundaries and compositions of fluid phases L1 and L2 are defined in the system NaF–H2O at 800°C. It is established that microlite solubility increase in the L1 phase, as compared with a homogeneous solution, is explained by the appearance in the L1 phase of “free” HF in an amount of 0.025 ± 0.003 mol kg–1 H2O. The model of “acidification” L1 and “alkalizing” L2 is supposed.
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Published in Russian in Doklady Akademii Nauk, 2016, Vol. 469, No. 2, pp. 210–214.
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Redkin, A.F., Kotova, N.P. & Shapovalov, Y.B. Liquid immiscibility in the system NaF–H2O and microlite solubility at 800°C. Dokl. Earth Sc. 469, 722–727 (2016). https://doi.org/10.1134/S1028334X16070151
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DOI: https://doi.org/10.1134/S1028334X16070151