Structure of nonmetamict Nb-rich zirconolite-3T from the Eifel paleovolcanic region

database, nuove specie, discrediti,
ridefinizioni, classificazioni, ecc.
Rispondi
Avatar utente
Marco E. Ciriotti
Messaggi: 24678
Iscritto il: ven 25 giu, 2004 11:31
Località: via San Pietro, 55 I-10073 Devesi/Cirié TO - Italy
Contatta:

Structure of nonmetamict Nb-rich zirconolite-3T from the Eifel paleovolcanic region

Messaggio da Marco E. Ciriotti » mer 24 gen, 2018 9:30

Prossima pubblicazione.

Referenza:
▪ Zubkova, N.V., Chukanov, N.V., Pekov, I.V., Ternes, B., Schüller, W., Ksenofontov, D.A., Pushcharovsky, D.Yu. (2018): The crystal structure of nonmetamict Nb-rich zirconolite-3T from the Eifel paleovolcanic region, Germany. Zeitschrift für Kristallographie - Crystalline Materials, 233, (in press).

Abstract:
The crystal structure of a Nb-rich zirconolite-3T from the Laach Lake volcano, Eifel, Germany, was studied by single-crystal XRD (R=0.0295). The mineral is trigonal, P3121; unit-cell dimensions are: a=7.3095(2), c=16.9604(5) Å, V=784.78(4) Å3. The empirical formula based on 14 O atoms (Z=3) is Ca1.28Ce0.31La0.14Nd0.12Pr0.06Th0.16 Zr1.94Hf0.04Ti1.74Nb1.22Fe0.72Mn0.28O14. The crystal-chemical formula based upon the structural model is: VIII(Ca0.70 Ce0.30)VIII(Ca0.58Ce0.32Th0.10)VII(Zr0.88Th0.04Hf0.02□0.06)2VII(□0.94 Zr0.06)2VI(Ti0.72Nb0.26Zr0.02)VI(Ti0.50Nb0.47Zr0.03)2IV(Fe0.355 Mn0.145)2O14 (Z=3).
Marco E. Ciriotti

«Things are interesting only in so far as they relate themselves to other things»

Avatar utente
Marco E. Ciriotti
Messaggi: 24678
Iscritto il: ven 25 giu, 2004 11:31
Località: via San Pietro, 55 I-10073 Devesi/Cirié TO - Italy
Contatta:

Re: Structure of nonmetamict Nb-rich zirconolite-3T from the Eifel paleovolcanic region

Messaggio da Marco E. Ciriotti » sab 15 set, 2018 11:43

Pubblicazione effettuata.

Referenza:
▪ Zubkova, N.V., Chukanov, N.V., Pekov, I.V., Ternes, B., Schüller, W., Ksenofontov, D.A., Pushcharovsky, D.Yu. (2018): The crystal structure of nonmetamict Nb-rich zirconolite-3T from the Eifel paleovolcanic region, Germany. Zeitschrift für Kristallographie - Crystalline Materials, 233, 463–468.
Marco E. Ciriotti

«Things are interesting only in so far as they relate themselves to other things»

Rispondi

Chi c’è in linea

Visitano il forum: Bing [Bot], Marco E. Ciriotti e 3 ospiti