Abstract
The iron bearing phases present in a ferromanganese nodule from the Central Indian Ocean have been determined using57Fe Mössbauer spectroscopy. The Mössbauer results have been corroborated by XRD, IR and TG-DTA studies. The Mössbauer spectrum of a ferromanganese nodule shows a broad line width which indicates the presence of more than one iron bearing paramagnetic oxide or oxyhydroxide phases where iron is present as Fe3+. γ-FeOOH has been distinctly characterised as one of the iron bearing phases in the nodule. Other oxyhydroxide and oxide phases of iron in the nodule have been ruled out. A typical paramagnetic doublet persists even at very high temperature which has been proposed to be due to iron(III)phosphate. Formation of solid solution of Mn2O3−Fe2O3 has been observed in the heat treated nodule at 1073 K, which has been characterised by the Mössbauer technique.
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References
S. Roy, Manganese Deposits, Academic Press, Inc. Ltd. London, 1981, p. 160.
R. G. Burns, B. A. Brown, Ferromanganese Deposits on the Ocean Floor,D. R. Horn (Ed.), National Science Foundation, Washington, D. C., 1972, p. 51.
G. M. Bancroft, Mössbauer Spectroscopy: An Introduction for Inorganic Chemists and Geochemists, McGraw Hill, London, 1973, p. 155.
C. E. Johnson, G. P. Glasby, Nature, 222 (1969) 376.
A. Z. Hrynkiewicz, A. J. Pustowka, B. D. Sawicka, J. A. Sawicki, Phys. Stat. Sol. (a), 10 (1972) 281.
A. V. Kalyamin, B. G. Lur'ye, Dokl. Earth Sect., 212 (1974) 207.
J. H. Johnston, G. P. Glasby, Geochem. J., 12 (1978) 153.
A. Thijs, G. de Roy, E. F. Vansant, G. P. Glasby, T. Thijssen, Geochem. J., 15 (1981) 25.
J. H. Johnston, G. P. Glasby, Marine Chem., 11 (1982) 437.
J. N. Pattan, A. V. Mudholkar, Geomarine Letters, 11 (1991) 51.
R. G. Burns, V. M. Burns, Marine Manganese Deposits,G. P. Glasby (Ed.), Elsevier, Amsterdam, 1977, p. 185.
G. J. Long, Mössbauer Spectroscopy Applied to Inorganic Chemistry, Vol. 1, Plenum Press, New York, 1984, Chaps 4 and 7.
E. von Meerwall, Comp. Phys., Commun., 9 (1975) 117.
N. N. Greenwood, T. N. Gibb, Mössbauer Spectroscopy, Chapman and Hall Ltd, London, 1971, Chap. 10.
R. J. Armstrong, A. H. Morish, G. A. Sawatzky, Phys. Letters, 23 (1966) 414.
D. W. Strangway, History of Earth's Magnetic Field, McGraw Hill, New York, (1970) p. 168.
R. R. Chevelier, G. Roult, E. F. Bertuat, Solid State Commun., 5 (1967) 7.
S. Gellar, R. W. Grant, J. A. Cape, G. P. Espinosa, J. Appl. Phys., 38 (1967) 1457.
R. W. Grant, S. Gellar, J. A. Cape, G. P. Espinosa, Phys. Rev., 175 (1968) 686.
N. V. Logvineko, I. I. Volkov, Y. G. Sokolova, Dokl. Acad. Sci., USSR Earth Sci. Sect., 203 (1972) 178.
D. Z. Piper, J. R. Basler, J. L. Bischoff, Geochim. Cosmochim. Acta, 48 (1984) 2347.
A. K. Singh, B. K. Jain, K. Chandra, Phys. Stat. Sol., A44 (1977) 443.
A. K. Singh, B. K. Jain, K. Chandra, J. Phys. D, 11 (1978) 55.
K. Nakamoto, Infrared Spectra of Inorganic and Organic Coordination Compounds. Wiley, New York, 1963, p. 107.
R. M. Potier, G. R. Rossman, Amer. Mineral, 64 (1979) 1199.
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Dutta, R.K., Das, D., Sudarshan, M. et al. 57Fe Mössbauer spectroscopic characterisation of a ferromanganese nodule from the Central Indian Ocean. J Radioanal Nucl Chem 223, 121–126 (1997). https://doi.org/10.1007/BF02223371
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DOI: https://doi.org/10.1007/BF02223371