Ta2O5 40.9% Al2O3 2.04% SiO2 4.89% SO3 0.265% K2O 0.0988% CaO 0.246% TiO2 1.39% MnO 4.49% Fe2O3 11.4% Nb2O5 19.35% SnO2 9.74% Ga2O3 1.09%