Final answer:
The Mineral Deed is the promulgated form used if the seller reserves all or a portion of the mineral estate.
Step-by-step explanation:
The promulgated form that is used if the seller reserves all or a portion of the mineral estate is the Mineral Deed. The Mineral Deed is a legal document that conveys the mineral rights from the seller to the buyer, specifically reserving the minerals for the seller. This form ensures that the buyer does not acquire the mineral estate along with the property.