After reading this I've been selling the Baaluk shopkeeper lots of stuff and no luck. I'm at the exact same point of being at the bases and Pagus asking for Divine Metal. I think there IS a dig spot in Blackdale, but I believe it is after the area crashes in and the right hand path changes.
I'm going to look into what weapons can be disassembled, and I'll keep selling stuff to the Baaluk merchant. As it happens I'm grinding at this point to get the BR rank over 70 in hopes Irina starts Psionics before I move on to the other bases (did Base 1 only so far).