%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Balan, Etienne
%A Fritsch, Emmanuel
%A Allard, T.
%A Morin, G.
%A Guillaumet, M.
%A Delattre, S.
%A Blanchard, M.
%A Calas, G.
%T Spectroscopic investigation and theoretical modeling of kaolinite-group minerals and other low-temperature phases
%D 2011
%L fdi:010053512
%G ENG
%J Comptes Rendus Geoscience
%@ 1631-0713
%K Spectroscopy ; Ab initio modeling ; Laterites ; Clay minerals ; Iron oxides
%M ISI:000289880800008
%N 2-3
%P 177-187
%R 10.1016/j.crte.2010.10.006
%U https://www.documentation.ird.fr/hor/fdi:010053512
%> https://www.documentation.ird.fr/intranet/publi/2011/05/010053512.pdf
%V 343
%W Horizon (IRD)
%X This article summarizes some recent results obtained on the physical properties of environmental minerals, mostly kaolinite-group minerals and Fe- and Al-(hydr)oxides occurring in lateritic soils. The defective structure of these minerals, including impurities, stacking faults and radiation-induced defects, is probed using infrared spectroscopy and electron paramagnetic resonance. Resulting information bears on models of soil formation and transformation mechanisms of minerals in low-temperature environments. We underline the increasing impact of quantum chemical modeling in this field, providing straightforward interpretations of spectroscopic signals and overcoming the limits of fingerprint approaches. Importantly, the first-principles modeling of isotopic fractionation factors provides new links between mineralogical and geochemical investigations of secondary minerals.
%$ 064