A New Compound of the (K,Na)3Ca8Si6[Si4O12]3 Charoite Substrate


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Аннотация

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.

Авторлар туралы

A. Kashaev

Institute of the Earth’s Crust, Siberian Branch,
Russian Academy of Sciences

Хат алмасуға жауапты Автор.
Email: liva@crust.irk.ru
Ресей, Irkutsk, 664033

L. Ivanova

Institute of the Earth’s Crust, Siberian Branch,
Russian Academy of Sciences

Email: liva@crust.irk.ru
Ресей, Irkutsk, 664033

V. Medvedev

Institute of the Earth’s Crust, Siberian Branch,
Russian Academy of Sciences

Email: liva@crust.irk.ru
Ресей, Irkutsk, 664033

Z. Uschapovskaya

Institute of the Earth’s Crust, Siberian Branch,
Russian Academy of Sciences

Email: liva@crust.irk.ru
Ресей, Irkutsk, 664033

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