The experimental study of a wolframite (Fe,Mn)WO4 solubility in aluminosilicate melts of different alkalinity at T = 1100°C and P = 1 and 4 kbar under dry conditions and in the presence of 10 wt % H2O made it possible to reveal its dependence on a melt agpaitic coefficient ((Na + K)/Al). At T = 1100°C and P = 1 kbar, a wolframite solubility increases with an increase in a melt agpaitic coefficient. At P = 4 kbar, a W content in aluminosilicate glass increases significantly, but the opposite pattern is observed: WO3 decreases in the melt with an increase in its agpaitic coefficient due to the crystallization of alkali W compounds. In water-containing systems, a melt heterogeneity is observed as an emulsion formation expressed in the presence of microscopic W-rich droplets.
Сук et al. (Fri,) studied this question.