Did the company that contacted you provide any details? I would ask for the number of acres owned, if it’s held by an existing lease and at what royalty, the source deed, and any other info they willingly provide. Clearly they’ve run some title and performed heirship research to locate you, so they’re going to be the best source of knowledge unless you hire a landman ($40-60/hour) to research everything for you. There’s no guarantee you can get good info from them, but if they’re serious about making a fair transaction occur, then they will likely be friendly and give you some information about your minerals.
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