Выпуск: 8 , Том: 10 , Год издания: 1969

The main differences of the T-P - conditions of mineral equilibria in intrusive rocks from T-P conditions of the gasliquid inclusions homogenization of these rocks minerals are considered in the paper. The effect of nepheline and alkaline felspar structures order degree on equilibrium distribution of K and Na between them are shown. Some attempts of comparison of the homogenisation temperatures with equilibrium temperatures in intrusive nepheline syenites are critically discussed