Minn. Stat. § 507.36: INSTRUMENTS RELATING TO TIMBER, MINERALS.

Every instrument heretofore or hereafter executed in the form of a conveyance, mortgage, lease, or in any other form in any manner affecting standing timber, stone, ores, minerals, or other similar property in place in or upon the earth, when executed and acknowledged in the manner provided for the execution and acknowledgment of conveyances, may be recorded in the office of the county recorder of any county in which such property is situated and such record shall be notice of the contents thereof and of the rights of all parties thereunder, as well after as before the severance or separation of such property from the land.