“ Obviously the mineral deposits which are the subject of the lease are not needed for farming or agricultural purposes and are not desired for individual allotments.
The issue of the trust patents containing, at the statute requires, a reservation for the benefit of the tribe of all minerals, including oil and gas, in or under the allotted land, operates to carve out of such land and create a distinct estate consisting of the minerals. This estate is in itself land, and, being reserved for the benefit of the tribe, it is tribal land, and is unallotted. ”

“ These Indians are wards of the United States and have been occupying a reservation in Montana. During recent years they have received allotments in severalty from lands in the reservation, and they now hold the allotments under so-called trust patents, whereby the United States declares that it will retain the title for a period of twenty-five years in trust for the use and benefit of the several allottees, and at the expiration of that period will convey the same by patent to them or their heirs. ”

“ The lease was authorized by a resolution of the tribal council, was recommended by the United States agent in charge of the reservation, was given for a term of five years from the date of its approval, was approved by the Secretary of the Interior October 5, 1934, and recites that it was given in accordance with section 3 of the Act of February 28, 1891, c. ”