The phosphorus-rich variety of ellenbergerite (Mg0.61Ti0.08vacancy0.31)2 (Mg0.52Al0.43vacancy0.05)12 [SiO3(O0.29(OH)0.71)]6 [(P0.71Si0.20vacancy0.09) O3OH]2(OH)6 was studied by X-ray diffraction and IR spectroscopy. The structure was refined in sp. gr. P63mc to R = 0.0248. The structure of phosphorus-rich ellenbergerite retains the octahedral framework observed in the structures of ellenbergerite, phosphoellenbergerite, ekatite, and a series of structurally related synthetic compounds. The structure of phosphorus-rich ellenbergerite differs from the structure of ellenbergerite primarily in that the Mg and Al cations in the phosphorus-rich variety are disordered in the octahedra of the framework, thereby leading to higher symmetry, and the channels of triangular cross section are occupied predominantly by P tetrahedra.

Crystal structure of phosphorous-rich ellenbergerite

PASERO, MARCO;MERLINO, STEFANO;
2007

Abstract

The phosphorus-rich variety of ellenbergerite (Mg0.61Ti0.08vacancy0.31)2 (Mg0.52Al0.43vacancy0.05)12 [SiO3(O0.29(OH)0.71)]6 [(P0.71Si0.20vacancy0.09) O3OH]2(OH)6 was studied by X-ray diffraction and IR spectroscopy. The structure was refined in sp. gr. P63mc to R = 0.0248. The structure of phosphorus-rich ellenbergerite retains the octahedral framework observed in the structures of ellenbergerite, phosphoellenbergerite, ekatite, and a series of structurally related synthetic compounds. The structure of phosphorus-rich ellenbergerite differs from the structure of ellenbergerite primarily in that the Mg and Al cations in the phosphorus-rich variety are disordered in the octahedra of the framework, thereby leading to higher symmetry, and the channels of triangular cross section are occupied predominantly by P tetrahedra.
Zubkova, Nv; Pushcharovsky, Dy; Pasero, Marco; Merlino, Stefano; Chukanov, Nv
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/201212
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 4
  • ???jsp.display-item.citation.isi??? 4
social impact