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described in paragraph (g), (g.3) or (g.4) and not in paragraph (f), of the definition Canadian exploration expense in subsection 66.1(6) if the expression “mineral resource” in paragraph (g) of that definition were defined to mean a mineral deposit from which the principal mineral to be extracted is diamond, a base or precious metal deposit, or a mineral deposit from which the principal mineral to be extracted is an industrial mineral that, when refined, results in a base or precious metal, and