I just read a story on Reuters out of Belgrade, and it says that "...a new mineral had been found in Serbia closely resembling the makeup of fictional "kryptonite," which rendered Superman helpless."

"While concluding an extensive examination of its unique chemistry, mineralogist Chris Stanley of London's Natural History Museum stumbled on a close match with 'kryptonite', as described in the movie 'Superman Returns'."

OK, here's your first clue that this is stupid. I would never take science lessons from Kevin Spacey, no matter how much of a badass he may be.

"In the comics, Superman would do anything to avoid kryptonite, whose glowing green crystals sapped his powers.

The actual mineral found at a mine near Jadar does not glow, is not radioactive, has very tiny crystals and is white rather than green. It is to be named Jadarite."

So it doesn't glow, isn't radioactive and ISN'T EVEN GREEN?

Pardon my robot french, but that's fucking stupid. Just because something says sodium lithium boron silicate hydroxide, doesn't mean it'll kill the man of steel. Sheesh.