Fig. 1
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SEM images of the silica dust and water ice samples. Top left: C1. Top right: C2. Middle left: C4. Middle right: C6. Bottom left: angular crystalline silica dust. Bottom right: water ice (image taken at a temperature of 85 K). Note the different magnifications between (i) C1; (ii) C2, C4, and angular silica; and (iii) C6 and water ice.
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