The crystal structure and chemical composition of a crystal of Mg(Mg,Cr,Si)2O4 post-spinel phase synthesized in the model system MgCr2O4–Mg2SiO4 at 16 GPa and 1600 °C have been investigated. The compound was found to crystallize with a distorted orthorhombic calcium-titanate (CaTi2O4) structure type, space group Cmc21, with lattice parameters a = 2.8482(1), b = 9.4592(5), c = 9.6353(5) Å, V = 259.59(1) Å3, and Z = 4.
Structural and chemical characterization of Mg[(Cr,Mg)(Si,Mg)]O4, a new post-spinel phase with sixfold-coordinated silicon / Bindi, Luca; Sirotkina, Ekaterina A.; Bobrov, Andrey V.; Irifune, 4 and Tetsuo. - In: AMERICAN MINERALOGIST. - ISSN 0003-004X. - STAMPA. - 100:(2015), pp. 1633-1636.
Structural and chemical characterization of Mg[(Cr,Mg)(Si,Mg)]O4, a new post-spinel phase with sixfold-coordinated silicon
BINDI, LUCA;
2015
Abstract
The crystal structure and chemical composition of a crystal of Mg(Mg,Cr,Si)2O4 post-spinel phase synthesized in the model system MgCr2O4–Mg2SiO4 at 16 GPa and 1600 °C have been investigated. The compound was found to crystallize with a distorted orthorhombic calcium-titanate (CaTi2O4) structure type, space group Cmc21, with lattice parameters a = 2.8482(1), b = 9.4592(5), c = 9.6353(5) Å, V = 259.59(1) Å3, and Z = 4.
| File | Dimensione | Formato | |
|---|---|---|---|
|
Si-post spinel_AM.pdf
Accesso chiuso
Tipologia:
Versione finale referata (Postprint, Accepted manuscript)
Licenza:
Tutti i diritti riservati
Dimensione
675.06 kB
Formato
Adobe PDF
|
675.06 kB | Adobe PDF | Richiedi una copia |
I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
