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Refined crystal structure of parakeldyshite and the genetic crystal chemistry of zirconium minerals with [Si2O7] diorthogroups

โœ Scribed by I. V. Pekov; N. V. Zubkova; D. Yu. Pushcharovsky; U. Kolitsch; E. Tillmanns

Book ID
111437873
Publisher
SP MAIK Nauka/Interperiodica
Year
2007
Tongue
English
Weight
193 KB
Volume
52
Category
Article
ISSN
1063-7745

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The crystal structure and refined formul
The crystal structure and refined formula of mountainite, KNa2Ca2[Si8O19(OH)] ยท 6 H2O
โœ Zubkova, Natalia V.; Pekov, Igor V.; Pushcharovsky, Dmitry Yu.; Chukanov, Nikita ๐Ÿ“‚ Article ๐Ÿ“… 2009 ๐Ÿ› Oldenbourg Wissenschaftsverlag ๐ŸŒ English โš– 239 KB

## Abstract Mountainite was described as a new mineral in 1957 with formula (Ca,Na~2~,K~2~)~16~Si~32~O~80~ยท 24 H~2~O; its crystal structure was not solved up to now. We studied the structure of mountainite from the Yubileinaya pegmatite, Lovozero alkaline complex, Kola Peninsula, Russia. Mountainit