Fig. 4

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Calculated dust absorption opacities per gas mass for the solid mixtures typically found in our stage 3 GGchem models; see examples in Table 2. The two red stars represent dust absorption opacities commonly used to derive disc masses from mm fluxes: 10 cm2/g(dust) at 1000 GHz (Beckwith et al. 1990) scaled to 3.5 cm2/g (dust) at 850 μm.
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