Comparison of Los Vientos 123 opacities (upper) and opacities from the literature. We show two different ranges of particle size: the blue line indicates a sieved sample with a range of 38–45 μm, and the orange line indicates the grounded sample with a range of 1–10 μm, with peak grain size between 3 and 5 μm. Comparison of olivine opacities (bottom) to opacities from the literature. We show different range sizes from 1–10 μm to 250–300 μm.