I added Mineralogy to my pack, used a Quarry to mine a chunk to see the look of it, and found this :/

Config is default enableInternalWorldGen=true/enableOreSpawnIntregration=false
Never saw that before

is this still a thing?

I will test with latest version

Nop, still get this:

Here is my instance, LaunchOption in a txt file in folder
https://www.dropbox.com/s/qt6q1hr0mhka476/1122M%20180322.zip?dl=0