While copper ore and even iron ore are just about everywhere once you reach Vermillius Gap in Dune: Awakening, you likely won't just stumble into some carbon ore by accident. Instead, you'll have to venture out further. If you've been exploring the second region and hoping for the best, you won't have any luck.
Below, I'll go over exactly where you need to go to start finding carbon ore deposits so you can process it into steel ingots. Bear in mind that, to make steel ingots, you need to combine carbon ore with iron ingots, so make sure you're collecting and refining some as you go.
