Detailed characterization of REE-bearing minerals in granitoid rocks from the Idanha-a-Nova and Castelo Branco plutons (Central Portugal) and in a few metasomatic rocks associated to the Bayan Obo Fe-REE-Nb mineralization (Inner Mongolia, China) provided an interesting basis for the interpretation of the bulk-rock REE patterns. Of the REE-bearing minerals analysed in the granitoid rocks, monazite exhibits the h...