Hey James,
Thanks for taking the time to answer all these questions!
I have three questions regarding adamantine:
Would it be effected by normal rust? My initial instinct says "no", since there's no iron in it.
What about magical? Gauntlets of Rust or a rust monster?
Lastly, would alloys made of adamantine (glaucite was the particular one my group was discussing) be able to be separated into their base components by a blacksmith?