Looking at the adjoining photo you will say he is Lex Luther the villain who weakens our favorite Superhero Superman in the movie Superman Returns & in comic books .The wicked uses a mineral Kryptonite which was in the form large green color crystals .
It is interesting to know that Kryptonite which stole Superman's power is no longer a fiction mineral . Recently researchers from mining group Rio Tinto discovered a mineral in a mine in Serbia which is almost similar to Kryptonite with respect to chemical formula which is Sodium-lithium boron silicate hydroxide. However the mineral varies from Kryptonite in color & form .The mysterious mineral is harmless white color powder, it it non radioactive & free from fluorine
When Lex Luther's weapon -Kryptonite is not fiction any more ,it is possible that soon we heard that Superman is also not a fictional character.He is one of us & within our society