Solid (left) and elemental mass fractions (right) of solid planetary building blocks formed completely exterior to the water ice line (T < 150 K) around a star with [Fe/H] = +0.2 (top) and [Fe/H] = +0.4 (bottom). In contrast to the mass fractions of solids formed around lower metallicity stars exterior to the water ice line, the dominant solids mass is not water ice, but Mg₂SiO₄. In fact, the water ice content is reduced to just a few percent for solids formed around stars with [Fe/H] = 0.4. The dominant elemental mass fraction is oxygen and iron, however the oxygen fraction is not as elevated as for planets formed around stars with low [Fe/H], see Fig. 5.