Any restricted Indian lands owned by the Navajo Tribe, members thereof, or associations of such members, or by the Hopi Tribe, members thereof, or associations of such members, may be leased by the Indian owners, with the approval of the Secretary of the Interior, for public, religious, educational, recreational, or business purposes, including the development or utilization of natural resources in connection with operations under such leases. All leases so granted shall be for a term of not to exceed twenty-five years, but may include provisions authorizing their renewal for an additional term of not to exceed twenty-five years, and shall be made under such regulations as may be prescribed by the Secretary. Restricted allotments of deceased Indians may be leased under this section, for the benefit of their heirs or devisees, in the circumstances and by the persons prescribed in section
of this title. Nothing contained in this section shall be construed to repeal or affect any authority to lease restricted Indian lands conferred by or pursuant to any other provision of law.