GeolosysHax
Finds Geolosys ore veins for you :3
How to use
Install the mod and type !hax in chat - the mod will tell you all the commands in chat. All chat messages that start with !hax would be processed by GeolosysHax and not sent in public chat.
Keep in mind that by default automatic scanning and JourneyMap markers are disabled - you have to enable them each time you join a server or open a singleplayer world. Found ore veins and don't get reset when you leave a server though.
JourneyMap integration
If JourneyMap is installed and you enabled ore vein markers, you can go ahead and open the JourneyMap fullscreen map and see that any new chunk that is loaded will have an ore icon on top of it shown. Hover to get information about what type of ore vein is it, and click it to remove the marker and create a waypoint on it's place.