I have tools (not sure if they are required to mine or not), I’ve tried prioritizing stone, I’ve even tried making a work camp that ONLY brings in stone (the villagers assigned act like the focus are has no stone in it). This was not a problem when I began the game but happened sometime around the second or third town hall upgrade. Closing the game and reopening the file does not fix the problem.
Do you have a production limit set on your stone?
Sounds frustrating! It could be a bug or a pathing/resource detection issue after the upgrade. Try relocating the work camp closer to visible stone deposits, or rebuilding it entirely—sometimes that resets villager behavior.
Just to check - are you sure you haven’t build the mine on infinite resource? I know its silly but for some reason only infinite mine works on infinite resource