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 language | English |
---|---|
Pages (from-to) | 459-482 |
Number of pages | 24 |
Journal | Hyperfine Interactions |
Volume | 226 |
Issue number | 1-3 |
DOIs | |
Publication status | Published - Apr 2014 |