Swamy, V and Menon, AG and Iyer, GVA (1994) High-temperature reactions of alkali and plagioclase feldspars with alkali and alkaline-earth chlorides-formation of celsian. In: Journal of the geological society of india, 43 (3). pp. 305-310.
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High-temperature reactions (Ca 900-degrees-C) involving albite, K-feldspar or plagioclase and K, Ba-or K, Sr chlorides were experimentally studied. These experiments reveal that the reaction between K-exchanged albite, potash feldspar, or plagioclase and Ba-chloride/Ba-K chloride results in the formation of celsian by the breakdown of the starting feldspar structure above 800-degrees-C. Sr-feldspar does not form under similar conditions. A size-effect of the large M-site cation appears to be responsible for the formation of celsian. The reaction between K-feldspar and barium chloride may be used as a method for synthesizing celsian.
| Item Type: | Journal Article |
|---|---|
| Publication: | Journal of the geological society of india |
| Publisher: | Springer |
| Additional Information: | Copyright of this article belongs to Springer. |
| Department/Centre: | Division of Chemical Sciences > Inorganic & Physical Chemistry |
| Date Deposited: | 01 Apr 2011 06:28 |
| Last Modified: | 01 Apr 2011 06:28 |
| URI: | http://eprints.iisc.ac.in/id/eprint/36537 |
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