Illium-629

Illium-629 was a by-product of the decrystallization of dilithiun. 

In 2386, the USS Robinson (NCC-71842) discovered a vessel in the Gamma Quadrant that had been attacked by the Glant and disabled by the dead zones in the space around their territory. The vessel's dilithium decrystallized and illium 629 was created.