A quick run across the coast of West Aelio found 19 mineral spots. Most of them are found along the stretch between Aelio Town Ruins and the Roaring Rush cocoon:
(I streamlined the creation of this one a bit, so some of the markers will be less than a pixel off.)
Edit: By the way, not all of the 5 Central Aelio lobsters from the task two days ago (and two daily resets) have respawned for me yet. So it's definitely not the case that all resources respawn at every reset.
I know for a fact that you missed one spot right below the northern ryuker device, so there is more material spots what what the game shows you.