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Until recently, there wasn't a definitive answer to this question. Siefer posted a scan from Black Panther Vol 3 #48, where 'Magneto' states that the vibranium micro-weave in Black Panther's costume prevented him from affecting the iron in T'Challa's blood. This implies that Magneto's powers don't work on vibranium. However, the 'Magneto' T'Challa ...


2

Based on these images of Captain America Vol 1 #417, the barge shown below has anti-metal on it. Below you can see Captain America's shield on a pile of the anti-metal and it didn't subsequently melt.


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