Sellafite

Sellafite is a type of radioactive rock. It comes in 7 different variations all ranking up in radioactivity: slaked, normal (just called Sellafite), hot, boiling, blazing, infernal and Sellafite-Corium. Later variants are more radioactive than the previous one. Slaked sellafite is not radioactive at all and can be identified from the others as it does not "glow".

Production
Sellafite is usually produced as the result of Nuclear Explosions through neutron activation of normal materials. Balefire explosions can produce slaked sellafite, but nothing more.

Sellafite may also be produced in a Nuclear Reactor meltdown, usually with the multiblock version, as form of solidified Corium.

Sellafite can be "warmed" up in a Breeding Reactor, by breeding a prior variant, starting with vanilla stone.

Uses
Sellafite-Corium is used to make DFC receivers.

Strong Radiation-Powered Engine fuel, especially Corium, but not worth to produce.

Effects
When stepped on, normal sellafite or a "warmer" variant, they give the contaminated effect for 30 seconds.