No he doesn’t.
This is a basic infringement on one of our most basic rights. This “split” rights thing is patently unconstitutional!
The existence of split property rights are just fine. In fact they're our best shot at privatizing control of Federal lands, a way of patenting uses in a manner much the same as discovering a mine. What's unconstitutional in this case is the Feds simply taking mineral rights from the Mars family without just compensation UNLESS the Mars family never purchased those rights on already split estate land.