Yeah, yeah, this is more science than technology … unless we can harness this mineral to power technology … nah. It’s just fun. The mining company Rio Tinto discovered the unusual mineral, couldn’t ID it, and asked Dr. Chris Stanley, a mineralogist at London’s Natural History Museum for help. After determining its chemical make-up, he discovered it had already been named … in the movie Superman Returns.
“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 Luther from a museum in the film Superman Returns. Source: BBC News
No, it’s not radioactive, meaning we can’t use it to kill Kryptonians, if there were any around. I haven’t seen any Daxamites lately either. 
