Explanatory notes
… cerium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, … fall in heading 38.24 . The heading also includes double or complex salts of these with other metals. The … of rare‑earth metals, e.g., xenotime (complex phosphates), gadolinite or ytterbite and cerite (complex silicates) ( …