Published: Jan 1, 2007
FTIR actinolite tremolite Mg-hornblende pargasite
E. Theodosoglou
A. Koroneos
K. M. Paraskevopoulos
G. Christofides
L. Papadopoulou
T. Zorba

Powder IR spectra of natural Ca-amphiboles were studied in the spectral range 4000 to 400 cm'1. The examined samples are: actinolite, tremolite, Mg-hornblende and pargasite. According to their spectra all the minerals of the four species present common features at 3658-3660, 919, 683-687, 661-668, 505-513, 457-464 and 419 cm . Additionally to these bands, the spectra of the actinolites, tremolites and Mghornblendes present common characteristics at 3673, 1094-1098, 989-998, 951, 752-758 and 441-449 cm'1. Moreover, six absorption bands are shown in the spectra of the pargasites at 3690, 981-984, 931, 805-811, 734 and 696-698 cm'1, in addition to the common bands appeared in all Ca-amphiboles, which do not appear in the spectra of the actinolites, tremolites and Mg-hornblendes. The spectra of pargasites are remarkably different from the spectra of the other three mineral species. These discrepancies could be attributed to differences in the structure of pargasites relative to the other three species as well as to the occupancy of the A site especially with Na+.

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  • Mineralogy-Petrology-Geochemistry-Economic Geology
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Burns, R. G., and Greaves, C. J., 1971. Correlations of infrared and Mossbauer site-population measurements of actinolites. Am. Mineral., 56, 2010-2033.
Burns, R. G., and Strens, R. G. J., 1966. Infrared study of the hydroxyl bands in clinoamphiboles, Science, 153,890-892.
Carmichael, R. S., 1982. Handbook of physical properties of rocks, vol. IL, CRC Press, Florida.
Christofides, G., 1977. Contribution to the study of the plutonic rocks of Xanthi area, PhD Thesis, Aristotle University of Thessaloniki, 249pp.
Delia Ventura, G., Hawthorne, F. C, Robert, J.-L., and lezzi, G., 2003. Synthesis and infrared spectroscopy of amphiboles along the tremolite-pargasite join, Eur. J. Mineral., 15, 341-347.
Delia Ventura, G., Hawthorne, F. C, Robert, J.-L., Delbove, F., Welch, M.. D., and Raudsepp, M.,1999. Short-range order of cations in synthetic amphiboles along the richterite-pargasite join, Eur. J. Mineral., 11, 79-94.
Farmer, V. C, 1974. The infra-red spectra of minerals, Mineralogical Society, London, 539pp.
Gopal, N. O., Narasimhulu, K. V., and Rao, J. L., 2004. EPR, optical, infrared and Raman spectral studies of actinolite mineral, Spectrochim. Acta, 60A, 2441-2448.
Hawthorne, F. C, 1981. Crystal chemistry of the amphiboles. In D. R. Veblen (ed.), Amphiboles and other hydrous pyriboles - Mineralogy. 1-102, Reviews in Mineralogy, MSA, 9A, 372pp.
Hawthorne, F. C, Welch, M., D., Delia Ventura, G., Robert, J.-L., and Jenkins, D. M., 2000. Short-range order in synthetic aluminous tremolites: an infrared and triple-quantum MAS NMR study, Am. Mineral, 85, 1716-1724.
Jenkins, D. M., Bozhilov, K. M., and Ishida, K., 2003. Infrared and TEM characterizationof amphiboles synthesized near the tremolite-pargasite join in the ternary system tremolitepargasite-cummingtonite, Am. Mineral, 88, 1104-1114.
Leake, B. E., Wooley, A. R., Arps, C. E. S., Birch, W. D., Gilbert, M. C, Grice, J. D., Hawthorne, F. C, Kato, Α., Kisch, H. J., Krivovichev, V. G., Linthout, K., Laird, J., Mandarino, J. Α., Maresh, W. V., Nickel, E. H., Rock, N. M. S., Schumacher, J. C, Smith, D. C, Stephenson, N, C, N., Ungaretti, L., Whittaker, E. J. W., and Youzhi, G., 1997. Nomenclature of Amphiboles: Report of the Subcommittee on Amphiboles of the International Mineralogical Association, Commission on New Minerals and Mineral Names. Canadian Mineral, 35, 219-246.
Leake, B. E., Woolley, A. R., Birch, W. D., Burke, E. A. J., Ferraris, G., Grice, J. D., Hawthorne, F. C, Kisch, H. J., Krivovichev, V. G., Schumacher, J. C, Stephenson, N. C. N., and Whittaker, E. J. W., 2003. Nomenclature of amphiboles: Additions and revisions to the International Mineralogical Association's 1997 recommendations, Canadian Mineral, 41, 1355-1362.
Lucania, J. P., Berets, S. L., Milosevic, M., Gremlich, H.-U, and Schmitt, J., 2002. The identification of geological samples using single reflection diamond ATR FTIR spectroscopy, Paper 2079P, Pittsburgh Conference.
Oinuma, K, and Hayashi, H., 1968. Infrared spectra of clay minerals, J. Tokyo Univ., Gen. Educ. (Nat. Sci.), 9, 57-98.
Prasad, P. S. R., Sarma, L. P., Gowd, T. N., and Krishnamurthy, A. S. R., 2000. Structural modifycations in natural tremolites: Spectroscopic studies, Current Science, 78, 729-734.
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