Safflorite, (Co,Ni,Fe)As2, isomorphous with marcasite

Hexiong Yang, Robert T. Downs, Carla Eichler

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Safflorite, a naturally occurring cobalt-nickel-iron diarsenide (Co,Ni,Fe)As2, possesses the marcasite-type structure, with cations (M = Co + Ni + Fe) at site symmetry 2/m and As anions at m. The MAs6 octa-hedra share two edges, forming chains parallel to c. The chemical formula for safflorite should be expressed as (Co,Ni,Fe)As2, rather than the end-member format CoAs2, as its structure stabilization requires the simultaneous inter-action of the electronic states of Co, Ni, and Fe with As2 2- dianions.

Original languageEnglish (US)
Pages (from-to)i62
JournalActa Crystallographica Section E: Structure Reports Online
Issue number9
StatePublished - 2008

ASJC Scopus subject areas

  • General Chemistry
  • General Materials Science
  • Condensed Matter Physics


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