Nioboaeschynite-(Y)

(Y,REE,Ca,Th,Fe)(Nb,Ti,Ta)₂(O,OH)₆

Ortorombico root IMA discredited

成分

Composizione (% in peso)

Nb

O

Y

NbNiobium50.1%
OOxygen25.9%
YYttrium24.0%

詞源

命名來源 niobium.

次要脈輪