Room for History

This is a world where Mars only has one form in the beginging, The Vespers. A mindless group of bat looking creatures that roam the surface of mars looking for anything to digest. They can eat any material including any type of flesh. Mars at this point has not been touched. But what lurks underneath the surface is a very powerfull mineral that has the ability to be a power supply for mulitiple functions. Also, has the ability to give humans the ability to regernate. Essentially if humans were to obtain this mineral then humans in theory could live forever, be immortal. The onlly place to find this mineral is near Mars core. No one in this universe has fully found more than one pound in this universe.