Just to get it out of the way, “Lay off the mexican food man!”.
It seems there’s no way to de-irridate the ground.
Even better, I think you’re getting irridated just holding the thing.
And yea, each description gets a different sub-set of the effects, some of the other fractal effects are really awesome.
As for a use for a radioactive artifact, you can reenact that scene from Star Trek 2. You just need to find a glass wall, and a NPC named Jim that doesn’t shoot you on sight.