How will the addition of a second component affect the crystallization relationship of a single one component system in albite-anorthite solid solution series?

When ever there is a monocomponet the freezing point and the mealting point is same.(Pure) At that point when the other component is added the higher concentration material will ...

Addition of second component in crystallization relationship of a single one component will change the crystallization temperature. For example, a melt containing pure Anorthite ...