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</html><description>Aluminium is na zuurstof en silicium een van de meest voorkomende metalen op aarde. Het vertegenwoordigt iets meer dan 8% van de totale massa van de aardkorst en is aanwezig in de meeste rotsen en in het menselijk lichaam. Vanwege de hoge chemische activiteit wordt het echter niet in pure vorm in de natuur aangetroffen. ... Lees verder</description></oembed>
