1 Oxide Conversion Factors: the conversion factors for rare earth oxides represent the multiplier used to convert the elements into their oxide forms. The conversion factors are as follows: Cerium ...

TREO (Total Rare Earth Oxide) includes the sum total of the Light Rare Earth Oxides (LREO) and Heavy Rare Earth Oxides (HREO) HREO includes: Eu2O3, Gd2O3, Tb2O3, Dy2O3, Ho2O3, Er2O3, Tm2O3, Yb2O3 ...