Email this article A New Compound of the (K,Na)3Ca8Si6[Si4O12]3 Charoite Substrate
- Authors: Kashaev A.A.1, Ivanova L.A.1, Medvedev V.J.1, Uschapovskaya Z.F.1
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Affiliations:
- Institute of the Earth’s Crust, Siberian Branch, Russian Academy of Sciences
- Issue: Vol 484, No 2 (2019)
- Pages: 160-162
- Section: Geochemistry
- URL: https://ogarev-online.ru/1028-334X/article/view/194603
- DOI: https://doi.org/10.1134/S1028334X1902003X
- ID: 194603
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Abstract
As a result of experimental studies on the interaction between a charoite substrate and host lamprophyres of microcline-arfvedsonitic composition, a new (K,Na)3Ca8Si6[Si4O12]3 compound has been obtained with a new type of radical Si2[Si4O12] found in its crystalline structure а = 15.2613 (3) Ǻ, I2/13, Z = 4. The chain-shaped Ca-octahedra connected through common faces encircle a radical and close in a K-octagon. In contrast to charoite with banded-tube radicals, an isometrically-island silicon radical is identified.
About the authors
A. A. Kashaev
Institute of the Earth’s Crust, Siberian Branch,Russian Academy of Sciences
Author for correspondence.
Email: liva@crust.irk.ru
Russian Federation, Irkutsk, 664033
L. A. Ivanova
Institute of the Earth’s Crust, Siberian Branch,Russian Academy of Sciences
Email: liva@crust.irk.ru
Russian Federation, Irkutsk, 664033
V. Ja. Medvedev
Institute of the Earth’s Crust, Siberian Branch,Russian Academy of Sciences
Email: liva@crust.irk.ru
Russian Federation, Irkutsk, 664033
Z. F. Uschapovskaya
Institute of the Earth’s Crust, Siberian Branch,Russian Academy of Sciences
Email: liva@crust.irk.ru
Russian Federation, Irkutsk, 664033
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