A mysterious metal find in Sweden is rewriting Iron Age history
A complete plano-convex ingot has been uncovered in Sweden for the first time. When researchers at the University of Gothenburg analyzed the object using isotopic and chemical methods, the results were surprising. "Due, in particular, to its shape and size, it seemed to us a Bronze Age artifact, but the ingot turned out to be made of a copper-zinc-tin-lead alloy,...








