Title says it all basically. I am aware that you get XP while mining. What I am suggesting is that you get Additional XP for the Mission, separate from the XP you get while mining.

As to how much XP for which mission, I dunno.

Maybe just gives XP to badges? For example mining 50cu Helio would give XP.

After giving it some thought, I think 25% of whatever the mining should get you sounds appropriate. So for instance carbonic, gives you 4xp the mission calls for 50, that's 200xp from the mining, plus a bonus 50xp, for a total of 250.

seems reasonable

+1