Is kryptonite a mineral?
Kryptonite is a rock from a fictitious Superman story. But there is a mineral found in 2007 in siberia that has the exact same elements as the fictional stuff. all except flouride the element is nicknamed kryptonite but cannot be called that for the element of krypton so it is named jadarite for the town nearest to where it was found.
In Smallville Blue Kyrptonite suppresses a Kryptonians Powers along with the effects of Green Kryptonite. In other versions Blue Kryptonite heals the effects of others for example - Red Kryptonite. Also affects Bizarros like Green Kryptonite affects Kryptonians or changes their personality to a more kindhearted manner.