Single-crystal X-ray refinement of wilkinsonite, Na2Fe 4 2+Fe2 3+Si6O 20

Jason B. Burt, Robert T. Downs, Gelu Costin

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


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 languageEnglish (US)
Pages (from-to)i122-i124
JournalActa Crystallographica Section E: Structure Reports Online
Issue number5
StatePublished - 2007

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics


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