Redox topotactic reactions in Fe II - III (oxy)hydroxycarbonate new minerals related to fougèrite in gleysols

"trébeurdenite and mössbauerite"

Jean Marie R Génin, O. Guérin, A. J. Herbillon, E. Kuzmann, S. J. Mills, G. Morin, G. Ona-Nguema, C. Ruby, C. Upadhyay

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Fougèrite mineral responsible for the bluish-green shade of gleysols in aquifers was identified as Fe II - III oxyhydroxycarbonate, [Fe II 6(1-x)Fe III 6xO 12H 2(7-3x)] 2+ · [CO 2- 3 · 3H 2O] 2- where the average ferric molar fraction x = [Fe III/Fe total] was restricted to the [1/3-2/3] range, up till now. In this paper, Mössbauer spectra of gleys extracted from the schorre of maritime marshes have values of x in the [2/3-1] range. Magnetic properties of homologous chemical compounds studied by Mössbauer spectroscopy are explained with long range order of Fe III ions within Fe cation layers for x = 1/3, 2/3 and 1. Observed values are mixtures of topotactic domains that are in fact minerals with names proposed to IMA: fougèrite for x = 1/3, trébeurdenite for x = 2/3 and mössbauerite for x = 1.

Original languageEnglish
Pages (from-to)71-81
Number of pages11
JournalHyperfine Interactions
Volume204
Issue number1-3
DOIs
Publication statusPublished - Mar 2012

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Redox reactions
Minerals
minerals
shades
marshlands
chemical compounds
Chemical compounds
aquifers
Carbon Monoxide
Aquifers
Cations
Magnetic properties
Spectroscopy
Ions
magnetic properties
cations
spectroscopy
ions

Keywords

  • Fe (oxy)hydroxycarbonate
  • Fougèrite
  • Green rust
  • Mössbauer spectroscopy
  • Mössbauerite
  • Topotaxy
  • Trébeurdenite

ASJC Scopus subject areas

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

Cite this

Redox topotactic reactions in Fe II - III (oxy)hydroxycarbonate new minerals related to fougèrite in gleysols : "trébeurdenite and mössbauerite". / Génin, Jean Marie R; Guérin, O.; Herbillon, A. J.; Kuzmann, E.; Mills, S. J.; Morin, G.; Ona-Nguema, G.; Ruby, C.; Upadhyay, C.

In: Hyperfine Interactions, Vol. 204, No. 1-3, 03.2012, p. 71-81.

Research output: Contribution to journalArticle

Génin, Jean Marie R ; Guérin, O. ; Herbillon, A. J. ; Kuzmann, E. ; Mills, S. J. ; Morin, G. ; Ona-Nguema, G. ; Ruby, C. ; Upadhyay, C. / Redox topotactic reactions in Fe II - III (oxy)hydroxycarbonate new minerals related to fougèrite in gleysols : "trébeurdenite and mössbauerite". In: Hyperfine Interactions. 2012 ; Vol. 204, No. 1-3. pp. 71-81.
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