As comic book fans know, kryptonite is a substance created from the remains of Krypton, Superman's home planet. The usually green, crystalline mineral is known for its ability to thwart Superman's powers. The science behind the substance has changed over the years—it's been both an element on the periodic table and a compound made up of other elements—but in the 2006 film Superman Returns, fans finally caught a glimpse of its scientific name: sodium lithium boron silicate hydroxide with fluorine.
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The History Of Superman
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An Introduction To Minerals
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Written by Ashley Hamer October 26, 2016
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