igroup	name	rho	process	igas
1	"Pure TiO2"                        4.2500	"Volatile"     	 2
2	"Mg2SiO4 Mantle (TiO2)"            3.2100	"Volatile"     	 3
2	"TiO2 Core (Mg2SiO4)"              4.2500	"Core Mass"    	 2
