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</html><description>De Alta kwartsiet heeft een antraciet kleur. Het gesteente is gevormd over miljoenen jaren, onder extreme temperaturen en een enorme druk. De Alta kwartsiet wordt gebruikt voor vele mooie projecten, waaronder treinstations in Nederland zoals station Amsterdam Centraal. Eigenschappen Uitgangsmateriaal van de Alta kwartiet is zand en bestaat verder uit kwarts en kwartsverbindingen, mica en [&hellip;]</description></oembed>
