Skip to main content Accessibility help

Routine identification of aluminium hydroxide polymorphs with the laser Raman microprobe

  • K. A. Rodgers (a1)


The laser Raman microprobe spectrum of gibbsite displays four intense v (OH)- stretching bands at ~3365, 3435, 3525 and 3618 cm-1, bayerite shows three near 3425, 3545 and 3564 cm-1, nordstrandite has three near 3492, 3566 and 3623 cm-1, and doyleite one broad band centred at -3545 cm-1 with sometimes a prominent shoulder near 3615 cm-1. The four polymorphs also possess distinctly different Raman signatures of medium to strong bands in the region 100–1200 cm-1. These differences provide a non-destructive routine determinative procedure by direct microsampling of untreated crystals, fragments, and microcrystalline powders. Sample preparation is minimal. Excessive noise and non-quenchable fluorescence are the principle limitations of the technique.



Hide All
Alker, A., Golob, P., Postl, W. & Waltinger, H. (1981) Hydrotalcite, Nordstrandit und Motukoreait vom Stradner Kogel, Stidlich Gleichenberg, Steiermark. Mitt. Bl. Abt. Miner. Landesmuseum Joanneum 49, 279292.
Calvert, C.S., Weed, S.B. & Buol, S.W. (1979) Estimation of amorphous material, 1:1 type layer silicates, And gibbsite dissolved in hot alkali treatment of soil clay. J. Soil Sci. Soc. Am. 43, 778–781.
Chao, G.Y. & Baker, J. (1982) Nordstrandite from Mont St-Hilaire, Quebec. Can Miner. 20, 7785.
Chao, G.Y., Baker, J., Sabina, A.P. & Roberts, A.C. (1985) Doyleite, A new polymorph of AI(OH)3, And its relationship to bayerite, Gibbsite and nordstrandite. Can. Miner. 23, 2128.
Cooney, R.P., Roogers, K.A. & Gregory, M.R. (1989) Laser Raman spectrum of bayerite from Raoul Island, Kermadec Group, South Pacific. Vulkanologiya i Seismologiya No.5, 97-99 (in Russian).
Crestin-DESJOBERT, S., Cruege, F. & Gout, R. (1987) The use of the Raman microprobe for studying bauxites. Terra Cognita 7, 14.
Cunningham, K.M. & Goldberg, M.C. (1983) A reexamination of the effects of adsorbates on the Raman spectrum of gibbsite. Soil Sci. 136, 102109.
Delhaye, M. & Dhamelincourt, P. (1987) Instrumentation Raman spectroscopy. Terra Cognita 7, 15.
Elderfield, H. & Hem, J. D. (1973) The development of crystalline structure in aluminium hydroxide polymorphs on ageing. Mineral. Mag. 39, 8996.
Frederickson, L.D. (1954) Characterization of hydrated aluminas by infrared spectroscopy. Application to the study of bauxite ores. Anal. Chem. 26, 18831885.
Gastuche, M.C. (1964) The octahedral layer. Clays Clay Miner. 12, 471–493.
Goldschmidt, V. (1918) Atlas der Krysallformen Taflen 4, Karl Winters, Heidelberg.
Huneke, J.T., Cramer, R.E., Alavrez, R., & El-Swaify, S.A. (1980) The identification of gibbsite and bayerite by laser Raman spectroscopy. J. Soil Sci. Soc. Am. 44, 130–134.
Hsu, P.H. (1989) Aluminium hydroxides and oxyhydroxides. Pp. 331-378 in: Minerals in Soil Environments (J.B. Dixon & S.B. Weed, Editors) Soil Science Society of America, Book Series 1.
Little, L.H. (1966) Infrared Spectra of Adsorbed Species. Academic Press, London, New York.
Mackenzie, R.C., Meldau, R. & Gard, J.A. (1962) The ageing of sesquioxide gels II. Alumina gels. Mineral. Mag. 33, 145157.
Moore, D.M. & Reynolds, R.C. (1989) X-ray Diffraction and Identification and Analysis of Clay Minerals. Oxford University Press, Oxford.
Rodgers, K.A. (1992) The laser Raman identity of gibbsite pseudomorphous after crocoite from Dundas, Tasmania. Pap. Proc. Roy. Soc. Tasm. 126, 15.
Rodgers, K.A., Gregory, M.R. & Barton, R. (1991) Bayerite, Nordstrandite, Gibbsite, Brucite, And pseudoboehmite in discharged caustic waste from Campbell Island, Southwest Pacific. Clay Clay Miner. 39, 103-107.
Rodgers, K.A., Gregory, M.R. & Cooney, R.P. (1989) Bayerite, Ai(OH)3, From Raoul Island, Kermadec Group, South Pacific. Clay Miner. 24, 531538.
Rodgers, K.A., Gregory, M.R., Courtney, S.F. & Shanklin, J.D. (1992) Aluminium hydroxide polymorphs in a waste deposit from Faraday Base, Argentine Islands. N. Jb. Miner. Mh. 1992(3), 127133.
Russell, J.D., Parfitt, R.L., Fraser, A.R. & Farmer, V.C. (1974) Surface structures of gibbsite, Goethite and phosphated goethite. Nature 248, 220221.
Saalfeld, H. (1960) Struckuren des Hydrargillits und der Zwischenstufen beim Entwäissern. N. Jb. Miner Abh. 95, 187.
Schoen, R. & Roberson, C.E. (1970) Structures of aluminium hydroxides and geochemical implications. Am. Miner. 55, 4377.
Wall, J.R.D., Wolvenden, E.B., Beard, E.H. & Deans, T. (1962) Nordstrandite in soil from west Sarawak, Borneo. Nature 196, 264265.
Wefers, K. & Misra, C. (1987) Oxides and hydroxides of aluminium. Aloca Technical Paper 19, 92 pp. (revised).
Wilmot, R.D. & Young, B. (1985) Aluminite and other aluminium minerals from Newhaven, Sussex: the first occurrence of nordstrandite in Great Britain. Proc. Geol. Ass. 96, 4752.
Van Straten, H.A., Holtkamp, B.T.W. & De Brvyn, P.L. (1984) Precipitation from supersaturated aluminate solutions. I Nucleation and growth of solid phases at room temperature. J. Coll. lnterf. Sci. 98, 342.
Vivlen, D., Stegman, M-C. & Mazières, C. (1973) Contribution a l'étude par spectroscopic infrarouge et RMN large bande des hydroxydes d'aluminium gibbsite, Bayerite, Nordstrandite. J. Chim. Phys. 70, 15021507.

Routine identification of aluminium hydroxide polymorphs with the laser Raman microprobe

  • K. A. Rodgers (a1)


Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed