Sorry, Superman

It looks like our furtive glances to the sky in hope that a hero will come and save us from a random purse-snatcher (it's a european carry-all!) or come and turn back time are all for naught.
An archeological dig in Serbia found a mineral that has the exact make-up as Kryptonite.

"apparently one Chris Stanley, a mineralogist at London's Natural History Museum discovered the correspondence by Googling "sodium lithium boron silicate hydroxide," which as you can easily verify brings up Wikipedia's entry on kryptonite."

(via SciAm)Kryptonite Discovered Adamantium Remains Elusive