Raman spectroscopy of selected borate minerals of the pinakiolité group
Article first published online: 15 JUL 2010
Copyright © 2010 John Wiley & Sons, Ltd.
Journal of Raman Spectroscopy
Volume 42, Issue 3, pages 540–543, March 2011
How to Cite
Frost, R. L. (2011), Raman spectroscopy of selected borate minerals of the pinakiolité group. J. Raman Spectrosc., 42: 540–543. doi: 10.1002/jrs.2745
- Issue published online: 20 MAR 2011
- Article first published online: 15 JUL 2010
- Manuscript Accepted: 4 JUN 2010
- Manuscript Received: 31 MAR 2010
- Queensland University of Technology Inorganic Materials Research Program
- Raman spectroscopy;
- fredrikssonité azoproite
The Raman spectra of a series of related minerals of the pinakiolité group have been collected and the spectra related to the mineral structure. These minerals are based upon an isolated BO33− ion. The site symmetry is reduced from D3h to C1. Intense Raman bands are observed for the minerals takeuchiité, pinakiolité, fredrikssonité and azoproité at 1084, 1086, 1086 and 1086 cm−1. These bands are assigned to the ν1 BO33− symmetric stretching mode. Low-intensity Raman bands are observed for the minerals at 1345, 1748; 1435, 1748; 1435, 1750; and 1436, 1749 cm−1, respectively. One probable assignment is to ν3 BO33− antisymmetric stretching mode. Intense Raman bands of the studied minerals at 712 cm−1 are attributed to the ν2 out-of-plane bending mode. Importantly, through the comparison of the Raman spectra, the molecular structure of borate minerals with ill-defined structures can be obtained. Copyright © 2010 John Wiley & Sons, Ltd.