This is the first structural refinement of the mineral wilkinsonite, Na2Fe4 2+Fe2 3+Si6O20. Wilkinsonite is a member of the aenigmatite group and consists of bands of Fe octa-hedra connected to eight-coordinated Na polyhedra forming sheets parallel to (011), which are inter-connected by chains of [Si6O18] and Fe octa-hedra. The site occupancies of the different valence states of Fe have been determined from bond distances and bond valence.
|Original language||English (US)|
|Journal||Acta Crystallographica Section E: Structure Reports Online|
|State||Published - 2007|
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics