isAlienMineral - returns for objects either with the 'alien_mineral' template (for placing kryptonite in a level), but also triggered on objects that can be marked by script as being laced with kryptonite. To make an object kryptonite laced:
and to clear it of kryptonite radiation:
Could be used as an accidental change trigger in a mod where kryptonite-lacing is implemented in some other way.
Characters with the new TOXIC attribute also trigger this vulnerability when in range.