Micro-FTIR and EPMA Characterisation of Charoite from Murun Massif (Russia)
Combined micro-Fourier transform infrared (micro-FTIR) and electron probe microanalyses (EPMA) were performed on a single crystal of charoite from Murun Massif (Russia) in order to get a deeper insight into the vibrational features of crystals with complex structure and chemistry. The micro-FTIR stu...
Saved in:
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2018-01-01
|
| Series: | Journal of Spectroscopy |
| Online Access: | http://dx.doi.org/10.1155/2018/9293637 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832564201733750784 |
|---|---|
| author | Maria Lacalamita |
| author_facet | Maria Lacalamita |
| author_sort | Maria Lacalamita |
| collection | DOAJ |
| description | Combined micro-Fourier transform infrared (micro-FTIR) and electron probe microanalyses (EPMA) were performed on a single crystal of charoite from Murun Massif (Russia) in order to get a deeper insight into the vibrational features of crystals with complex structure and chemistry. The micro-FTIR study of a single crystal of charoite was collected in the 6000–400 cm−1 at room temperature and after heating at 100°C. The structural complexity of this mineral is reflected by its infrared spectrum. The analysis revealed a prominent absorption in the OH stretching region as a consequence of band overlapping due to a combination of H2O and OH stretching vibrations. Several overtones of the O-H and Si-O stretching vibration bands were observed at about 4440 and 4080 cm−1 such as absorption possibly due to the organic matter at about 3000–2800 cm−1. No significant change due to the loss of adsorbed water was observed in the spectrum obtained after heating. The occurrence of well-resolved water bending vibration bands at about 1595 and 1667 cm−1 accounts for more than one structural water molecule as expected by charoite-90 polytype structure model from literature. The chemical composition of the studied crystal is close to the literature one. |
| format | Article |
| id | doaj-art-6d8a5a9d59d84a84af7851c169b0e755 |
| institution | Kabale University |
| issn | 2314-4920 2314-4939 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Spectroscopy |
| spelling | doaj-art-6d8a5a9d59d84a84af7851c169b0e7552025-02-03T01:11:32ZengWileyJournal of Spectroscopy2314-49202314-49392018-01-01201810.1155/2018/92936379293637Micro-FTIR and EPMA Characterisation of Charoite from Murun Massif (Russia)Maria Lacalamita0Dipartimento di Scienze della Terra, Università di Pisa, 56126 Pisa, ItalyCombined micro-Fourier transform infrared (micro-FTIR) and electron probe microanalyses (EPMA) were performed on a single crystal of charoite from Murun Massif (Russia) in order to get a deeper insight into the vibrational features of crystals with complex structure and chemistry. The micro-FTIR study of a single crystal of charoite was collected in the 6000–400 cm−1 at room temperature and after heating at 100°C. The structural complexity of this mineral is reflected by its infrared spectrum. The analysis revealed a prominent absorption in the OH stretching region as a consequence of band overlapping due to a combination of H2O and OH stretching vibrations. Several overtones of the O-H and Si-O stretching vibration bands were observed at about 4440 and 4080 cm−1 such as absorption possibly due to the organic matter at about 3000–2800 cm−1. No significant change due to the loss of adsorbed water was observed in the spectrum obtained after heating. The occurrence of well-resolved water bending vibration bands at about 1595 and 1667 cm−1 accounts for more than one structural water molecule as expected by charoite-90 polytype structure model from literature. The chemical composition of the studied crystal is close to the literature one.http://dx.doi.org/10.1155/2018/9293637 |
| spellingShingle | Maria Lacalamita Micro-FTIR and EPMA Characterisation of Charoite from Murun Massif (Russia) Journal of Spectroscopy |
| title | Micro-FTIR and EPMA Characterisation of Charoite from Murun Massif (Russia) |
| title_full | Micro-FTIR and EPMA Characterisation of Charoite from Murun Massif (Russia) |
| title_fullStr | Micro-FTIR and EPMA Characterisation of Charoite from Murun Massif (Russia) |
| title_full_unstemmed | Micro-FTIR and EPMA Characterisation of Charoite from Murun Massif (Russia) |
| title_short | Micro-FTIR and EPMA Characterisation of Charoite from Murun Massif (Russia) |
| title_sort | micro ftir and epma characterisation of charoite from murun massif russia |
| url | http://dx.doi.org/10.1155/2018/9293637 |
| work_keys_str_mv | AT marialacalamita microftirandepmacharacterisationofcharoitefrommurunmassifrussia |