Explanatory notes
… neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium). … nor a mixture of cerium chloride and cerium sulphate since these examples are not compounds derived directly from … phosphates), gadolinite or ytterbite and cerite (complex silicates) ( heading 25.30 ) and monazite (phosphates of …