[Warhammer]

I found 3 in chapter 1 and 0 in chapter 2. I am at the very beginning of chapter 3.

I can't tell you exactly where I found 2 of the adamantite probably some chests, but the third one I found on the dead body of Lomax (?) the half-orc living in the no-man's land (between the temple and Blacklake district) in Neverwinter.

I have a tendancy to always "persuade" people to give me a bigger reward after I finished one of their quests, more often than not it is just gold but once in a while they may give a nice reagent.