A mine in Serbia has turned up a sample with the same chemical composition as the fictional Superman-killer. Dr. Stanley was interviewed by BBC News: “Towards the end of my research I searched the web using the mineral’s chemical formula — sodium lithium boron silicate hydroxide — and was amazed to discover that same scientific name, written on a case of rock containing kryptonite stolen by Lex Luthor from a museum in the film Superman Returns.” (Thanks, Mr.Dave!)