Crystal structure on grossular–andradite solid solution

database, nuove specie, discrediti,
ridefinizioni, classificazioni, ecc.
Rispondi
Avatar utente
Marco E. Ciriotti
Messaggi: 26105
Iscritto il: ven 25 giu, 2004 11:31
Località: via San Pietro, 55 I-10073 Devesi/Cirié TO - Italy
Contatta:

Crystal structure on grossular–andradite solid solution

Messaggio da Marco E. Ciriotti » sab 09 nov, 2019 10:53

Referenza:
▪ Wang, Y., Sun, Q., Duan, D., Liu, Xi, Bao, X. (2019): The Study of Crystal Structure on Grossular–Andradite Solid Solution. Minerals, 9, 691; https://doi.org/10.3390/min9110691

Abstract:
The effects of Al3+–Fe3+ substitution on 10 synthesized garnet samples along the grossular–andradite binary solid solution were investigated using both powder and single-crystal X-ray diffraction. Results showed that cell volume increased with andradite content. Small negative excess volume was observed in the Al-rich samples. By measuring the bond length, polyhedral volume, octahedral distortion parameter (σ), and tetrahedral rotation angle (α), we determined that the distortion occurred on the dodecahedral site. The width of the diffraction peaks was obviously related to the composition of the solid solution. Full width at half maximum of diffraction peaks was used to calculate the microstrain, which may have a relationship with enthalpy of mixing.
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: Google [Bot] e 1 ospite