Samarskite Group

ishikawaite

shakhdaraite-(Y)

srilankite

yttrotantalite-(Y)

The samarskite group includes:

calciosamarskite: (Ca,Fe,Y)(Nb,Ta,Ti)O4
ishikawaite: (U,Fe,Y)NbO4
samarskite-(Y): YFe3+Nb2O8
samarskite-(Yb): YbNbO4
shakhdaraite-(Y): ScYNb2O8
srilankite: Ti2ZrO6
yttrotantalite-(Y): (Y,U,Fe2+)(Ta,Nb)(O,OH)4

The samarskite group is a member os the columbite supergroup

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