I like this idea. It would be nice if cobblestone could also be extracted to gravel and gravel compressed to basalt. (gravel cooked back to cobblestone would also be nice. That would complete a few material state machines. The glass cycle is already a dead-end spur, but that's OK as cobble/stone is renewable.)
im perfectly fine with the sandstone recipe above but basalt's lava rock last i checked so that'd make no sense unless having lava on top of a stone block cooked it into basalt, now thatd make sense.