Q: Does the AM keep kryptonite in its Minerals Gallery? A: While krypton is a real element found on the periodic table, there is no natural mineral known as kryptonite with superpowers, as depicted in Superman stories. This stunning mineral is one of many fluorescent minerals that exist - but they are not radioactive! These glowing rocks might look unassuming on a daily basis (much like Clark Kent), but under UV light, they transform to become fluorescent. How do they work? All minerals reflect