Pure Delarsium can just be Enchanted Delarsium, that can justify the fact that it doesn't adhere to the laws of physics much.
It's like, to enchant one Delarsium ingot, you need a special Master-level spell that costs about 1000 magicka to cast.
Responses
In response to blip #66752
@Chameloshi: This would be hard to do since Yoshkrydon is the only person who knows the spell, and most Brolandians are absolute shit when it comes to using Magicka. There decent at defending against it, they just suck at using it for themselves.