I agree that it's pretty nuts for a pure mage to get exactly 0 tiers of Clear Mind. Not sure what the thought process was, there.

On the bright side for Geomancer's MP recovery, the job can put together a very solid high-Refresh idle set:

Owleyes
Spurrina Coif
Any +2 Refresh Body
Nares Trews
Serpentes Set

On the dark side, chilling out with Darth Vader and taking hits from his weird respirator mask thingy, is the fact the Geomancer will probably need to idle in a low-Refresh set instead. Unless Geomancer gets very odd JSE, that's the only way to work in the -Damage Taken% needed order to stand vaguely near a monster and be an aura-emitter.