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</html><description>Wist je dat het element Iridium zo zeldzaam is dat het als buitenaards wordt beschouwd? Dit komt door de overvloed aan meteorieten zoals de Willamette. Aan de andere kant moeten ongeveer 350.000 gesteenten die het bevatten worden verwerkt om slechts 1 kg te verkrijgen, omdat er voor elke miljard atomen &#xE9;&#xE9;n van dit metaal is. ... Lees verder</description></oembed>
