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Characterisation of Ni silicate-bearing minerals by UV-Vis-NIR spectroscopy : Effect of Ni substitution in hydrous Ni-Mg silicates

Reddy, B. Jagannadha, Frost, Ray L., & Dickfos, Marilla J. (2009) Characterisation of Ni silicate-bearing minerals by UV-Vis-NIR spectroscopy : Effect of Ni substitution in hydrous Ni-Mg silicates. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 71(5), pp. 1762-1768.

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Abstract

Three Ni silicate-bearing pimelite, nepouite and pecoraite minerals, from Australia have been investigated by UV-Vis-NIR spectroscopy to study the effect of Ni-Mg substitution. The observation of three major absorption bands at 9205-9095 cm-1, 15600-15190 cm-1 and 26550-25660 cm-1 are the characteristic features of Ni2+ in six fold coordination. The effect of cation substitution like Mg2+ for Ni2+ on band shifts in electronic and vibrational spectra enable the distinction between the Ni-bearing silicates.

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5 citations in Web of Science®

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250 since deposited on 19 Nov 2008
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ID Code: 15661
Item Type: Journal Article
Keywords: UV, Vis and NIR spectroscopy, pimelite, nepouite, pecoraite, OH, overtones
DOI: 10.1016/j.saa.2008.06.030
ISSN: 1386-1425
Subjects: Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Structural Chemistry and Spectroscopy (030606)
Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600)
Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Structural Chemistry and Spectroscopy (030606)
Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Colloid and Surface Chemistry (030603)
Divisions: Past > QUT Faculties & Divisions > Faculty of Science and Technology
Copyright Owner: Copyright 2009 Elsevier
Copyright Statement: Reproduced in accordance with the copyright policy of the publisher.
Deposited On: 19 Nov 2008
Last Modified: 01 Mar 2012 00:07

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