Hi ShellyG. Mineral interest values are typically based upon whether they are currently producing or not. In addition, you indicate that we’re talking net acreage so I presume that you are just one of the undivided mineral owners. This changes the value as well.
If producing, the value is based most often on the annual income generated times some number of years. If nonproducing, the value is generally low, around $50/nma. Hope this helps.
Jean