ROLE OF ALUMINIUM IN THE SILICATE NETWORK: IN SITU, HIGH-TEMPERATURE STUDY OF GLASSES AND MELTS ON THE JOIN SIO2-NAALO2
- DSpace Home
- →
- Геология России
- →
- ELibrary
- →
- View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.
dc.contributor.author | Neuville D.R. | |
dc.contributor.author | Mysen B.O. | |
dc.date.accessioned | 2020-11-21T07:57:33Z | |
dc.date.available | 2020-11-21T07:57:33Z | |
dc.date.issued | 1996 | |
dc.identifier | https://elibrary.ru/item.asp?id=490166 | |
dc.identifier.citation | Geochimica et Cosmochimica Acta, 1996, , 10, 1727-1737 | |
dc.identifier.issn | 0016-7037 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/19228 | |
dc.description.abstract | The structure of glasses and melts in the NaAlSiO2-SiO2 system was determined in situ as a function of temperature by Raman spectroscopy, in the temperature range of 300 K–1800 K. The high-frequency envelope of the Raman spectra of Al-free SiO2 glass is deconvoluted in three different bands (1050, 1150, and 1200 cm−1) with the 1150 and 1200 cm−1 bands attributed to Si-O0 stretch vibrations in Q4 species in the fully polymerized network. There is a decrease in their frequencies with increasing Al/(Al + Si) of the glasses and melts in the Al/(A1 + Si) range investigated (0–0.5).The spectra are consistent with Al3+Si4+ substitution in two coexisting, three-dimensionally interconnected structural units. These units have different average intertetrahedral angles. Aluminum partitions preferentially into the unit with the smaller angle at low Al/(Al + Si) (less than ~0.3), and into the unit with the larger angle at higher concentrations. There is no evidence for major structural changes (i.e., redistribution of Al) in the glasses and melts as a function of increasing temperature. | |
dc.title | ROLE OF ALUMINIUM IN THE SILICATE NETWORK: IN SITU, HIGH-TEMPERATURE STUDY OF GLASSES AND MELTS ON THE JOIN SIO2-NAALO2 | |
dc.type | Статья |
Files in this item
Files | Size | Format | View |
---|---|---|---|
There are no files associated with this item. |
This item appears in the following Collection(s)
-
ELibrary
Метаданные публикаций с сайта https://www.elibrary.ru