BSE images of monazite grains located in garnet M15 (a, b), in quartz M13 (c, d) or in coronitic texture M6 (e, f). a: M15 grain is rounded and mostly homogeneous with localized dark contrast domains (white arrow). c: M13 is rounded, mostly homogeneous with dark contrast domains (white arrow) localized on the rim and contains silicate inclusions (incl.). e: M6 grain is anhedral with a bright core and dark contrast domains forming a rim (white arrow). Silicate inclusions are spatially associated with dark contrast domains. The three grains show the presence of nanophases corresponding to dark (black arrows) and bright (thick white arrows) spots (b, d, f) present only in cores. Some dark and bright nanophases are in equilibrium (thin white arrows).