Research Article

Raman spectroscopic study of the metatellurate mineral: xocomecatlite Cu3TeO4(OH)4

  1. Ray L. Frost*,
  2. Elle C. Keeffe

Article first published online: 17 DEC 2008

DOI: 10.1002/jrs.2167

Issue

Journal of Raman Spectroscopy

Journal of Raman Spectroscopy

Volume 40, Issue 8, pages 866–869, August 2009

Additional Information

How to Cite

Frost, R. L. and Keeffe, E. C. (2009), Raman spectroscopic study of the metatellurate mineral: xocomecatlite Cu3TeO4(OH)4. Journal of Raman Spectroscopy, 40: 866–869. doi: 10.1002/jrs.2167

Author Information

  1. Inorganic Materials Research Program, School of Physical and Chemical Sciences, Queensland University of Technology, GPO Box 2434, Brisbane Queensland 4001, Australia

*Inorganic Materials Research Program, School of Physical and Chemical Sciences, Queensland University of Technology, GPO Box 2434, Brisbane Queensland 4001, Australia.

Publication History

  1. Issue published online: 17 AUG 2009
  2. Article first published online: 17 DEC 2008
  3. Manuscript Accepted: 24 OCT 2008
  4. Manuscript Received: 29 JUL 2008

Funded by

  • Queensland University of Technology Inorganic Materials Research Program of the School of Physical and Chemical Sciences

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Keywords:

  • tellurate;
  • tellurite;
  • xocomecatlite;
  • kurankhite;
  • tlapallite;
  • Raman spectroscopy

Graphical Abstract

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Raman spectroscopy has been used to study the mineral xocomecatlite which is a hydroxy metatellurate mineral with Te6+ O4 units. Tellurate containing minerals are very rare as the tellurate ion is readily reduced to the tellurite ion.

Abstract

The mineral xocomecatlite is a hydroxy metatellurate mineral with Te6+ O4 units. Tellurates may be subdivided according to their formula into three types of tellurate minerals: type (a) (AB)m (TeO4)pZq, type (b) (AB)m(TeO6)·xH2O and (c) compound tellurates in which a second anion including the tellurite anion, is involved. The mineral xocomecatlite is an example of the first type. Raman bands for xocomecatlite at 710, 763 and 796 cm−1, and 600 and 680 cm−1 are attributed to the ν1(TeO4)2− symmetric and ν3 antisymmetric stretching mode. Raman bands observed at 2867 and 2926 cm−1 are assigned to TeOH stretching vibrations and enable estimation of the hydrogen bond distances of 2.622 Å (2867 cm−1), 2.634 Å (2926 cm−1) involving these OH units. The hydrogen bond distances are very short implying that they are necessary for the stability of the mineral. Copyright © 2008 John Wiley & Sons, Ltd.

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