Mineral Identification By Spectroscopy
Jan 11, 2017 Occurs chiefly as silicate thorite. H2SO4 decomposes the mineral, and the sulphate of Th can he ppted by boiling. C2H2O4 pptes a white oxalate of Th, insoluble in dilute acids, soluble in NH4C2H3O2 CH3COOH. ThO2 can be obtained by igniting the oxalate. Yttrium Spectroscopy. Occurs in rare minerals, such as Gadolinite, Orthite, etc.