Radeite

Radeite is a radioactive crystalline material, widespread in trace amounts, but exceedingly rare in its whole form, that causes the development of superpowers.

Physical Properties
Yellowish-green in color, Radeite is a brittle crystalline material resembling gypsum or zinc sulfide.

Prenatal exposure to trace amounts is known to trigger the development of superpowers. Exposure to any significant amount, however, will still result in superpowers but is also lethally poisonous.