Condensation Sequence

Temperature (K) Element Condensing Form of Condensate Comments
2000 None ------ Gaseous Nebula
1600 Al, Ti, Ca Oxides (Al2O3, CaO) --------
1400 Fe, Ni Nickel-Iron grains Planetary cores, iron meteorites
1300 Si Silicates and ferrosilicates minerals [enstatite, MgSiO3; pyroxene, CaMgSi2O6; olivine, (Mg,Fe)2SiO4] in form of microscopic grains First stony material, combined to form meteorites
300 C Carbonaceous Grains Forms black, carbonaceous soils and rocks
less than 300 H, N Ice particles (water, H2O; ammonia, NH3; methane, CH4) Large amounts of ice