Well, almost kryptonite.
It seems a new mineral has been discovered that almost matches the composition of kryptonite.
Scientists have discovered a new mineral that matches the composition of kryptonite, the mythical rock that could sap Superman’s strength in comic books.
The rock — named jadarite — was discovered in a mine in Jadar, Serbia, by the Rio Tinto company and identified by London’s Natural History Museum.
If kryptonite exists, maybe one day we’ll find Superman exists too? 
