While it is true that the G5 Carbonized Matter is on a lot of the heavensward nodes, THEY ARE BY NO MEANS EASY TO GET FROM THEM. They are rare hidden items to the point where you're lucky to see it once in an hour or two of gathering, unless you use the 3 hq chain skill to get it. Even then, you'll have used 3 gathering attempts just to find the thing, so you'll have anywhere from 1 to 3 hits and that's it for the node.