We further investigated the morphology of the structures produced in these reactions using scanning electron microscopy (SEM), and Energy-Dispersive X-ray Spectroscopy (EDAX). The data (Figures and) suggest the structures observed are derived from FR solids rather than from the inorganic salts resulting from the reaction and its drying for SEM analysis, though there is some variation in the correspondence between morphology and composition, which deserves attention at this scale for this type of analysis.