When you sell mineral rights it is treated as a long-term capital gains sale (IRC 1231) as long as it has been owned for more than one year. The sale should not have been reported in box 3, box 7 is the more appropriate place on the 1099-MISC, and regardless- when you enter this information into Turbotax in the Investment income area as I have outlined in my answer above, the amounts (whether in box 3 or box 7 of your 1099-MISC) will flow to your Schedule D as appropriate. You normally should receive a 1099-B for the sale of these mineral property rights. However, even if you did not receive the form 1099-B, you are still required to report the sale to the IRS.
For extra reassurance, feel free to read the IRS rules for 1099-MISC reporting, here: <a rel="nofollow" target="_blank" href="
https://www.irs.gov/instructions/i1099misc/ar02.html#d0e613">https://www.irs.gov/instructions/i1099m...>
