Severability
Mineral estates are often severed from the surface estate. Such severance is accomplished with a conveyance or reservation of these rights. This conveyance or reservation includes minerals or substances considered to be minerals. Mineral rights do include hydrocarbon resources such as oil and natural gas, which are technically not minerals, because a mineral is formally a naturally occurring crystalline "solid". But nonetheless, legal regimes typically lump them together under this one term. Such a conveyance or reservation includes royalties, bonuses and rentals.
Read more about this topic: Mineral Rights