Solubility of Monazite-Cheralite and Xenotime in Granitic Melts, and Experimental Evidence of Liquid-Liquid Immiscibility in Concentrating REE

Abstract

Abstract We provide new experimental data of monazite, xenotime and U-Th-bearing cheralite solubility in slightly peralkaline to peraluminous granitic melts using dissolution and reverse (i.e., recrystallisation after dissolution) experiments in water-saturated and flux-bearing (P+F+Li) granitic melts, at 800 °C and 200 MPa. Although a positive correlation between REE solubility and melt peralkalinity is confirmed, monazite solubilities reported here are much lower than the values previously pub…