Valuable mining rights should, broadly speaking, follow the same rules as land under georgism. rather than, say, "renting" it from some guy who has land deeds that say "i own this mountain".

what turns iron ore into a car is labor, which you should pay the laborer for.

that is, unless you think you should have a greater share of mineral rights than somebody else for some reason.

Would you not say that finding the mineral deposit is worth at least some reward, separate from the labor of mining and processing the ore?