Thanks for the post, I recently changed vocation so gotta level up Prospecting as a level 66 so this will definitely come in handy to recall which zones had what since it's been a while that I've been at these zones.
"You must gather your party before venturing forth" -Baldur's Gate
I also like the Midgewater Marshes & Chetwood for Tin/Copper/Rowan logs.
And the Northern Barrow Downs is an excellent place to find Barrow Iron, (go figure!) Silver and Ash logs.
Both the Marshes & Downs have plentiful and annoying mobs if you're trying to farm at or near your current level, but they're great if you're high enough that they ignore you.