Contrary to iron, silver or gold, aluminium has to be chemically extracted. The mineral you extract aluminium from is bauxite. This chemical process was mastered so recently that the Washington Monument is tipped with it just to show off. Even then the tip is so small that you can barely see it with your own eyes, but you can see it in Spiderman :)
https://thescienceof.org/spider-man-washington-monument/ https://www.youtube.com/watch?v=lPVzP2Jfdgs