The Immersive Petroleum information is shown along with the excavator veins, the information added to the map is exactly what is on the tooltip of the core sample you pick up. It's the "5,713,000 mB Oil" line in this screenshot.
Krutoy242 commented
Ok, thank you. I wish there was coloured boxes instead of just text
kumquat-ir commented
ill add that to my todo list, seems like a good idea