Raman spectroscopic study of the minerals apophyllite-(KF) KCa4Si8O20F.8H2O and apophyllite-(KOH) KCa4Si8O20(F,OH).8H2O
Frost, Ray L. & Xi, Yunfei (2012) Raman spectroscopic study of the minerals apophyllite-(KF) KCa4Si8O20F.8H2O and apophyllite-(KOH) KCa4Si8O20(F,OH).8H2O. Journal of Molecular Structure, 1028, pp. 200-207.
![[img]](http://eprints.qut.edu.au/style/images/fileicons/application_pdf.png)
Abstract
Raman spectroscopy complimented with infrared spectroscopy has been used to study the variation in molecular structure of two minerals of the apophyllite mineral group, namely apophyllite-(KF)KCa4Si8O20F.8H2O and apophyllite-(KOH) KCa4Si8O20(F,OH).8H2O. apophyllite-(KF) and apophyllite-(KOH) are different minerals only because of the difference in the percentage of fluorine to hydroxyl ions. The Raman spectra are dominated by a very intense sharp peak at 1059 cm -1. A band at around 846 cm -1 is assigned to the water librational mode. It is proposed that the difference between apophyllite-(KF) and apophyllite-(KOH) is the observation of two Raman bands in the OH stretching region at around 3563 and 3625 cm -1. Multiple water stretching and bending modes are observed showing that there is much variation in hydrogen bonding between water and the silicate surfaces.
Citations:
Citation countsare sourced monthly from Scopus and Web of Science citation databases.
These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science generally from 1980 onwards.
Citations counts from the Google Scholar™ indexing service can be viewed at the linked Google Scholar™ search.
Full-text downloads:
Full-text downloadsdisplays the total number of times this work’s files (e.g., a PDF) have been downloaded from QUT ePrints as well as the number of downloads in the previous 365 days. The count includes downloads for all files if a work has more than one.
| ID Code: | 52762 |
|---|---|
| Item Type: | Journal Article |
| Keywords: | Apophyllite-(KF) and apophyllite-(KOH), Xonotlite, Silicate, Raman spectroscopy, Infrared spectroscopy |
| DOI: | 10.1016/j.molstruc.2012.06.005 |
| ISSN: | 0022-2860 |
| Subjects: | Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Structural Chemistry and Spectroscopy (030606) |
| Divisions: | Current > Schools > School of Chemistry, Physics & Mechanical Engineering Current > QUT Faculties and Divisions > Science & Engineering Faculty |
| Copyright Owner: | Copyright 2012 Elsevier B.V. All rights reserved. |
| Copyright Statement: | This is the author’s version of a work that was accepted for publication in Journal of Molecular Structure. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Molecular Structure, Volume 1028, 28 November 2012, Pages 200–207. |
| Deposited On: | 26 Jul 2012 11:49 |
| Last Modified: | 27 Jul 2012 15:34 |
Export: EndNote | Dublin Core | BibTeX
Repository Staff Only: item control page