Polymorphism of samarskite and its relationship to other structurally related Nb-Ta oxides with the α-PbO2 structure

On the basis of the experimental results obtained from synthesized and natural samples, samarskite is proposed to be a mineral with alpha -PbO2 structure, covering a wide range of chemical compositions and occurring as either partially disordered A3B5O16 or completely disordered M8O16. A diagram sho...

Full description

Saved in:
Bibliographic Details
Published inThe American mineralogist Vol. 70; no. 7-8; pp. 856 - 866
Main Authors Sugitani, Yoshinori, Suzuki, Yoshihisa, Nagashima, Kozo
Format Journal Article
LanguageEnglish
Published Mineralogical Society of America 01.01.1985
Subjects
columbite
crystal structure
euxenite
fergusonite
fersmite
fluorides
halides
Mineralogy
minerals
niobates
niobotantalates
nonsilicates
order-disorder
oxides
polymorphism
pyrochlore
samarskite
synthetic minerals
tantalates
tapiolite
X-ray data
Online AccessGet full text

Cover

More Information
Summary:On the basis of the experimental results obtained from synthesized and natural samples, samarskite is proposed to be a mineral with alpha -PbO2 structure, covering a wide range of chemical compositions and occurring as either partially disordered A3B5O16 or completely disordered M8O16. A diagram showing the structural relation to related minerals columbite, ixiolite, wolframite and others is presented.
ISSN:0003-004X
1945-3027