European Journal of Mineralogy; June 2001; v. 13; no. 3;
p. 533-543; DOI: 10.1127/0935-1221/2001/0013-0533
© 2001 E. Schweizerbart'sche Verlagsbuchhandlung Science Publishers
Crystal-chemistry of magnesiocarpholite
: controversial X-ray diffraction, Mössbauer, FTIR and Raman results
Yves FUCHS1,
Marcello MELLINI2 and
Isabella MEMMI2
1 Laboratoire de Minéralogie Cristallographie de Paris, UMR 7590 du CNRS, case 115, Université Pierre et Marie Curie, 4 Place Jussieu, F-75252 Paris Cedex 05, France
2 Dipartimento di Scienze della Terra, Università di Siena, Via Laterina 8, 153100 Siena, Italy

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Fig. 1. 57Fe Mössbauer spectra of magnesiocarpholite from Monte Leoni (top) and from Monte Argentario (bottom).
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Fig. 2. FTIR spectra spectra of magnesiocarpholite from Monte Argentario and Monte Leoni in the OH-stretching region.
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Fig. 3. Polarized Raman spectra of magnesiocarpholite from Monte Argentario (top) and Monte Leoni (bottom) in the OH-stretching region; (1) = c axis horizontal and parallel to the polarization direction; (2) = c axis horizontal and normal to the polarization direction; (3) = c axis vertical and most developed crystal face parallel to the polarization direction; (4) = c axis vertical and most developed crystal face normal to the polarization direction.
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Fig. 4. FTIR spectra of magnesiocarpholite from Monte Argentario and Monte Leoni in the 1200900 cm1 region corresponding to the stretching vibrations of the Si-O bonds.
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