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Click Here for Larger Tumchaite Image in a New Browser Window ... Comments: SEM photomicrograph of typical tumchaite crystals shaped by the prism {hkl}, ...
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(70.02.02)Dana Group. 70.02.02.01 Penkvilksite Na4(Ti,Zr)2[Si8O22]•4(H2O) P 21/c 2/m. 70.02.02.02 Tumchaite! Na2(Zr,Sn)Si4O11•2(H2O) P 21/c 2/m ...
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Tumchaite, Na2(Zr,Sn)Si4O11·2H2O, is a new species from the Vuoriyarvi alkali-ultrabasic massif, Murmansk Region, Russia, where it occurs as colorless to ...
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The mineral is named tumchaite for the river Tumcha near Vuoriyarvi massif. ... The IR spectrum of tumchaite was recorded from powdered ...
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The crystal structure of tumchaite was refined to R = 0.043 for 865 Fo > 4σ(Fo). ... The mineral is named tumchaite for the river Tumcha near Vuoriyarvi massif.
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American Mineralogist, Volume 85, 1571 Pohwat, P.: ... -quartz 732 albite 1681 carbonates 217 forsterite 1143, 1155 Friedel's salt 1046 hydrocalumite 1046 hydrogarnets 1706 Mg in pyrope 608 MgO 1447 MgSiO3 ilmenite 317 MgSiO3 perovskite 1447 OH in clays 1038 plagioclase 1159 pyrite surfaces 1428 wadsleyite 1155 Quartz 1725,
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Small-pore framework sodium silicates (AV-14) Na2MSi4O11 · 2H2O (M = Zr and Hf) possessing the structure of the rare mineral tumchaite have been prepared ...
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Tumchaite - Wikipedia
La tumchaite è un minerale. Webmin Silicati
it.wikipedia.org/wiki/Tumchaite |
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Название: Тумчаит (TUMCHAITE). Спецификация: [1]. Формула: Na2[Zr0.8Sn0.2]Si4O11 · 2H2O. Сингония: моноклинная-бета. Пространственная группа: P 2(1)/c ...
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Armstrongite and Tumchaite: Zr-Silicates with Silicate ... tumchaite extend the ideas about polymorphism of tetrahedral complexes [Si4O11], ...
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