4. Rights in or over mineral substances listed below do not form part of the domain of the State if the substances are found
— in mining concessions for which letters patent were issued before 1 July 1911;
— in lands granted in a township before 24 July 1880 or granted by location ticket for agricultural purposes for which letters patent or other titles were not issued before or were issued after that date but which, until 1 January 1921, could be deemed to have been issued on 24 July 1880;
— in lands granted under seigniorial tenure where mining rights were not vested in the State:
(1) mineral substances contained in a parcel of land where a deposit in operation on 6 May 1982 was situated, provided a declaration according to law was filed in the office of the registrar within 180 days after 15 September 1982;
(2) mineral substances contained in a parcel of land containing an ore deposit serving as a reserve necessary to the carrying on of a mining, petroleum or gas enterprise in operation in Québec on 6 May 1982, provided that the operator, within the meaning of section 218, was the holder of the rights in those mineral substances, that he established the existence of indicators of the presence of a workable deposit and that he filed a declaration according to law in the office of the registrar within 180 days after 15 September 1982;
(3) mineral substances covered by an option, a promise of sale or a lease on 6 May 1982, provided that the original or an authentic copy of the document was filed in the office of the registrar within 180 days after 15 September 1982.