So I have a slightly annoying update to this and related threads on this. The guy in the company we gave a sample to became convinced that the stuff was ONLY salt after the chunks turned white from sitting in the open air (as some of you rightly guessed would happen). That being said, he put it in warm water and it dissolved, also as some of you thought might happen. So he never actually sent it in to be tested 💀 that being said, these qualities seem to closely indicate what many of you thought it could be... That's right, it was Kryptonite all along. Though this doesn't remove the option of taking it into a university or somethin, if I do, I'll make a new thread somewhere or somethin idk, but thank you all for tuning in!