Liquid immiscibility in the system NaF–H2O and microlite solubility at 800°C
- Authors: Redkin A.F.1, Kotova N.P.1, Shapovalov Y.B.1
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Affiliations:
- Institute of Experimental Mineralogy
- Issue: Vol 469, No 1 (2016)
- Pages: 722-727
- Section: Geochemistry
- URL: https://journals.rcsi.science/1028-334X/article/view/188633
- DOI: https://doi.org/10.1134/S1028334X16070151
- ID: 188633
Cite item
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.
About the authors
A. F. Redkin
Institute of Experimental Mineralogy
Author for correspondence.
Email: redkin@iem.ac.ru
Russian Federation, ul. Akad. Osip’yana 4, Chernogolovka, Moscow region, 142432
N. P. Kotova
Institute of Experimental Mineralogy
Email: redkin@iem.ac.ru
Russian Federation, ul. Akad. Osip’yana 4, Chernogolovka, Moscow region, 142432
Yu. B. Shapovalov
Institute of Experimental Mineralogy
Email: redkin@iem.ac.ru
Russian Federation, ul. Akad. Osip’yana 4, Chernogolovka, Moscow region, 142432