425. The disposition or acquisition by a taxpayer, at any time in a taxation year that begins before 1 January 2007, of property that is petroleum, natural gas or other related hydrocarbons, or metal or minerals produced in the operation by the taxpayer of a natural accumulation of petroleum or natural gas, an oil or gas well or a mineral resource, situated in Canada, is deemed to be made at the fair market value of that property at that time, where (a) the disposition is to a person referred to in section 90 gratuitously or for a consideration less than that fair market value; or
(b) the acquisition is from a person referred to in section 90 for an amount greater than that fair market value.