Comparison between best-fit models, photometry and IR spectra for EP Aqr. Top and mid panels: dust with 99% Mg2SiO4 and 1% Fe2SiO4. Top panel: SEDs from face-on geometry only. Mid panel: SEDs from edge-on geometry only. Bottom panel: compares the same dust masses and morphologies with these dust species; 90% Mg2SiO4, 9% Al2O3, and 1% Fe2SiO4. The different morphologies are indicated by different colours and symbols as annotated in the panels. The black dashed curve is the stellar photospheric SED model. The yellow spectrum is from ISO-SWS (Sloan et al. 2003). The blue and red spectra are from Herschel-PACS (Nicolaes et al. 2018). The photometry (Table 2) is shown as black dots (the error bars were smaller than the symbols and are not shown here).