Our Monster Hunter Wilds Ember Rufflizard guide explains where to find this important part of Dareel's research quest.

Pop-Up Camps are basically camp sites on the go. They offer almost all the same functionality of your tent back at Base Camp. You can restock your inventory, change your equipment

In Monster Hunter Wilds you can find Carbalite Ore at any Mining Outcrop (except Oilwell Basin) or from Piragill once you reach high rank. You need to complete the first mission of Chapter 4 in the main story to reach high rank, if you look for Carbalite Ore before this point you won't find it.