Item talk:Q162649
From geokb
Mindat Short Description
Samarskite Group.
The Y analogue of samarskite-(Yb). The Fe(III) analogue of shakhdaraite-(Y).
Due to cation ordering Fe is written separately in the formula; it is an essential cation.
"...first example of cation-ordered niobate structurally...
Geoscience Ontology Status Notes
Rose H (1847) Ueber die Zusammensetzung des Uranotantals und des Columbits vom Ilmengebirge in Sibirien, Annalen der Physik und Chemie 71, 157-169 Name changed from samarskite: Nickel E H, Mandarino J A (1987) Procedures involving the IMA Commission on New Minerals and Mineral Names and guidelines on mineral nomenclature, American Mineralogist 72, 1031-1042
IMA Formula (from Mindat)
YFe3+Nb2O8
RRUFF Formula (from Geoscience Ontology)
(Y3+,Ce3+,U4+,Fe3+,Nb5+)(Nb5+,Ta5+,Ti4+)O4
Additional References
- None
- None
