Structure and occurrences of ≪ green rust ≫ related new minerals of the ≪ fougérite ≫ group, trébeurdenite and mössbauerite, belonging to the ≪ hydrotalcite ≫ supergroup; how Mössbauer spectroscopy helps XRD

J. M.R. Génin, A. Christy, E. Kuzmann, S. Mills, C. Ruby

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Mössbauer spectroscopy yields decisive information for interpreting x-ray diffraction (XRD) patterns in the case of 'green rusts with intercalated CO32- anions, i.e. the chemical analogs of the three minerals that constitute within the ≪ hydrotalcite ≫ supergroup comprising 44 minerals the "fougèrite" group where the structure stays globally unchanged. The only difference comes from the deprotonation of OH- ions at the apices of the octahedrons occupied by the Fe cations so that FeII ions become FeIII. Low angle x-ray diffraction using synchrotron radiation displays the presence of many polytypes which reflects the stacking of brucite like layers and anion interlayers so that a 2D long range order of anions stays unchanged from fougèrite to mössbauerite.

Original languageEnglish
Pages (from-to)459-482
Number of pages24
JournalHyperfine Interactions
Volume226
Issue number1-3
DOIs
Publication statusPublished - Apr 2014

Keywords

  • Fougèrite
  • Green rust
  • Mössbauer spectroscopy
  • Mössbauerite
  • Polytypes
  • Trébeurdenite

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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