Colo. Rev. Stat. § 39-1-104.5
Any owner of the surface estate from which a mineral interest has been severed, on behalf of himself and any other owners of such interest in the surface, may require the assessor of the county wherein such real estate is situate to place such severed mineral interest, without regard to value, on the tax roll of the county if the owner of the surface estate provides proof of ownership of the severed mineral interest and a record of the creation of the severed mineral interest as shown by the records of the county clerk and recorder. Proof of ownership and the record of creation of the severed mineral interest shall be provided in the form of a certificate prepared by an attorney, a title insurance company, or a title insurance agent authorized to do business in this state.
C.R.S. § 39-1-104.5