samarskite-(Y). Yttrocrasite-(Y)Q (columbite: IMA1987 s.p., 1906) 4.DG.05 [81] [82] [83] Note: its description is poor and so it is questionable. Yttrotantalite-(Y)
HREE, include gadolinite, xenotime, samarskite, euxenite, fergusonite, yttrotantalite, yttrotungstite, yttrofluorite (a variety of fluorite), thalenite, and