To obtain a preference right lease, you must have a prospecting permit for the area you want to lease and meet the following conditions and any other conditions established in this subpart:

(a) All leasable minerals except asphalt. You must demonstrate that you have discovered a valuable deposit within the period covered by your prospecting permit. However, paragraphs (b) and (d) of this section provide some limitations.

(b) Sodium, potassium, and sulphur. In addition to the requirements of paragraph (a) of this section, BLM must determine that the lands are chiefly valuable for the subject minerals.

(c) Asphalt. You may not obtain a preference right lease for asphalt. However, you may obtain a competitive lease or a fringe acreage lease under subpart 3508 or 3510 of this part.

(d) Permits issued under the authority of Reorganization Plan No. 3 of 1946. Prospecting permits for minerals BLM administers under the authority of Reorganization Plan No. 3 of 1946 do not entitle you to a preference right lease. We may grant you a noncompetitive lease if you discover a valuable deposit during the permit term.