The Governor may sell the right to quarry limestone and clays necessary or proper for the manufacture of cement upon the following lands: Sections 21 and 28, township 5 N., range 2 E., or any part thereof. He may sell the said rights for such price and upon such terms as to him appear just and reasonable. The sale of such rights shall confer upon the purchaser landing privileges, all necessary rights-of-way for the purpose of quarrying the material and moving the same, and all rights and privileges which are necessary for the enjoyment of the rights granted; but the state shall retain possession of the lands and have the right to the use and enjoyment thereof for every other purpose whatever.