Chemical composition of monazite from the three studied samples: (a) Ternary diagram La+Ce+Nd+Pr − U+Th+Pb − Sm+Gd+Y (mol%) showing the distribution of the monazite composition amongst the main end-members: monazite s.s., actinide-bearing end-members and mid-heavy REE phosphates; (b) Y-Th-U ternary diagram (mol%) showing the monazite chemical composition in relation to the textural position in each studied sample; (c) chondrite-normalised REE patterns in monazite from the paragneiss sample VP7-2.