84.1. The holder of a mining exploration licence has an exclusive right to explore for mineral substances in the territory for which the licence is issued, with the exception of
(1) petroleum, natural gas and brine;
(2) sand other than silica sand used for industrial purposes, gravel, common clay used in the manufacture of clay products and every other mineral substance found in its natural state as a loose deposit, as well as inert mine tailings used for construction purposes;
(3) in the part of the territory also subject to a licence to explore for surface mineral substances or an exclusive right to mine surface mineral substances, every other surface mineral substance.