It's kryptonite, Superman

[Genecks]

A new mineral matching its unique chemistry - as described in the film Superman Returns - has been identified in a mine in Serbia.

 

http://news.bbc.co.uk/2/hi/science/nature/6584229.stm

[insane_alien]

although it doesn't actually contain krypton so it can't be called kryptonite.

[Genecks]

I'm curious as to how the fictional literature had this chemical name in place: sodium lithium boron silicate hydroxide.

[insane_alien]

it was on the case in the new superman film. i expect it was just a rndom name

[John Cuthber]

"although it doesn't actually contain krypton so it can't be called kryptonite."

Does that mean that witherite in some sense contains the apex of an animal's back? Is M. Jean Baptiste Biot trying to escape from biotite?

Names of rocks are pretty much arbitrary.