it will dissolve in the right solvent. inject then pump out edit: already a brine to pump out https://en.wikipedia.org/wiki/Smackover_Formation

It's got a lot in common with sodium, being just over it in the periodic table. So just like how you have NaCl, you'll find LiCl too, in a dissolved salt form. You'll not really find it in the pure metallic form because it reacts quickly and violently with water in that form, just like sodium. And earth is pretty wet.