What is a Net Mineral Acre (NMA)?

Net mineral acres represent the true “net” acreage owned by mineral owner out of the total gross acres in a given tract of land. That is to say, if you own a 50% interest in the minerals under a 100-acre tract of land, you would own 50 net mineral acres out of 100 gross mineral acres (100GMA x 50% = 50NMA).