Ježekite, Na.sub.8./sub.[(UO.sub.2./sub.)(CO.sub.3./sub.).sub.3./sub.](SO.sub.4./sub.).sub.2./sub..3H.sub.2./sub.O, a new uranyl mineral from Jáchymov, Czech Republic

0456375 - FZÚ 2016 RIV CZ eng J - Článek v odborném periodiku
Plášil, Jakub - Hloušek, J. - Kasatkin, A.V. - Belakovskiy, D. I. - Čejka, J. - Chernyshov, D.
Ježekite, Na₈[(UO₂)(CO₃)₃](SO₄)₂.3H₂O, a new uranyl mineral from Jáchymov, Czech Republic.
Journal of Geosciences. Roč. 60, č. 4 (2015), 259-267. ISSN 1802-6222. E-ISSN 1803-1943
Grant CEP: GA ČR GP13-31276P
Institucionální podpora: RVO:68378271
Klíčová slova: ježekite * new mineral * uranyl carbonate-sulfate * crystal structure * Jáchymov
Kód oboru RIV: DB - Geologie a mineralogie
Impakt faktor: 1.326, rok: 2015

Ježekite (IMA2014-079), Na8[(UO2)(CO3)3](SO4)2•3H2O, is a new uranyl carbonate-sulfate mineral from Jáchymov, Western Bohemia, Czech Republic. The new mineral was found on samples from the Geschieber vein in the Svornost mine. It occurs as a crystalline crust composed of thin, bladed prismatic crystals of yellow to sulfuric yellow color on a gangue along with andersonite, čejkaite, schröckingerite and ubiquitous gypsum. The crystal structure of ježekite (R = 0.043 for 444 reflections) contains finite uranyl tricarbonate clusters linked through the Na–O bonds to form sheets of the composit ion {Na2[(UO2)(CO3)3]}2– parallel to (001). The adjacent sheets of polyhedra are also linked through Na–O bonds to the six Na2 atoms .
Trvalý link: http://hdl.handle.net/11104/0256886