File:Efflorescence-glass-white-crystals.png

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Glass. Crystals caused by pollutants in air. Comments: Pollutants from off-gassing storage materials caused acetate salts to form on black glass beads. Image credit: Photograph by David Thickett. Permission received 8/31/2020 from David Thickett via email to SSpringer.

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current20:24, 26 March 2021Thumbnail for version as of 20:24, 26 March 2021944 × 1,001 (628 KB)Sspringer (talk | contribs)Glass. Crystals caused by pollutants in air. Comments: Pollutants from off-gassing storage materials caused acetate salts to form on black glass beads. Image credit: Photograph by David Thickett. Permission received 8/31/2020 from David Thickett via email to SSpringer.

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