Fig. 2: Microscopic images of precipitated sodium sulfate crystals at different molar fractions of Mg.
From: Controlled spherulitic crystal growth from salt mixtures
Evaporation of unsaturated mixed salt solutions droplets with varying Mg molar fractions xMg at T = 21 ± 1 ∘C resulting in three types of precipitation: (i) polyhedral sodium sulfate crystals (labeled with triangles), (ii) premature to full spherulitic morphologies (labeled with black dots), (iii) evaporating droplets transforming into a gel-like state (amorphous state) (labeled with open circles).
