Been struggling getting this RoE done this week. Been trying for over an hour to find the Luminants to get a Mimeo stone, but I was only able to find one location in all that time not marked on maps found online. I ran out of time on that attempt due to miasmas and not knowing I could go up a ramp on the mountain's south side to clear rocks/miasma on south east corner of the mountain to reach the start faster :-/.
From some googling it appears there are 5 or 6 spawn locations. I was hoping some kind soul happened to know the other locations and could share them please. I added a green dot to the map below to the one on the east side of the map that I found. Thanks for any help.
Edit: Updated the map with one that has some more Luminants I verified myself. Think it's just missing one possibly in South East.