Mineral Valuation

If you inherited an undivided interest of 500 acres of land with an associated title to known coal deposits and or suspected oil and gas deposits, how would you determine the value of the land? This is an all too common question for those who inherit land with a title to known or suspected mineral deposits. The problem is further complicated by other factors: the intentions of the other heirs, the estate valuations, the required listing of value for the timely tax return filings.