Images
Fergusonite
Formulae:
fergusonite-(Ce) CeNbO4.0.3H2O
fergusonite-(Nd) NdNbO4
fergusonite-(Y) YNbO4
These are multiple oxides containing the rare earth elements niobium Nb,
cerium Ce, neodymium Nd and yttrium Y, usually metamict.
Environments
Pegmatites
Carbonatites
Placer deposits
Metamorphic environments