GAIA website image credits
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The following photographs are used under Creative Commons licenses, found via Openverse.

stock-feldspar-k.jpg: "Potassium feldspar" by James St. John (CC BY 2.0) - https://www.flickr.com/photo.gne?id=32499528651
stock-magnesite.jpg: "Magnesite (Windous Magnesite Deposit, Tertiary; Westvaco Chl" by James St. John (CC BY 2.0) - https://www.flickr.com/photo.gne?id=52414388845
stock-mineral-handling.jpg: "Gypsum quarrying in Semnan province, Iran (19)" by Ali Abak (CC BY) - https://commons.wikimedia.org/wiki/File:Gypsum_quarrying_in_Semnan_province,_Iran_(19).jpg
stock-ballclay.jpg: "South side of Newbridge ball clay quarry" by Robin Stott (CC BY-SA 2.0, via geograph.org.uk) - https://commons.wikimedia.org/wiki/File:South_side_of_Newbridge_ball_clay_quarry_-_geograph.org.uk_-_1654759.jpg
stock-flyash.jpg: "Flugasche" (Public domain) - https://commons.wikimedia.org/wiki/File:Flugasche.jpg
stock-bottomash.jpg: "Müllheizkraftwerk Schlacke 2" by Dirk1981 (CC BY-SA 4.0) - https://commons.wikimedia.org/wiki/File:M%C3%BCllheizkraftwerk_Schlacke_2.jpg
stock-gypsum-quarry.jpg: "Gypsum quarrying in Semnan province, Iran (11)" by Ali Abak (CC BY 4.0) - https://commons.wikimedia.org/wiki/File:Gypsum_quarrying_in_Semnan_province,_Iran_(11).jpg
stock-granules.jpg: "Polypropylene Pellets" by Quantum Chemical Corporation (CC BY) - https://commons.wikimedia.org/wiki/File:Polypropylene_Pellets_-_DPLA_-_f7c2fa29d14525ce21219452f4a1a316.jpg

stock-halloysite.webp and stock-qc.webp: Unsplash (Unsplash License).
All cine-*.webp photography: Unsplash (Unsplash License).