Sejkoraite-(Y), a new member of the zippeite group containing trivalent cations from Jáchymov (St. Joachimsthal), Czech Republic: Description and crystal structure refinement.

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Authors

PLÁŠIL Jakub DUŠEK Michal NOVÁK Milan ČEJKA Jiří CÍSAŘOVÁ Ivana ŠKODA Radek

Year of publication 2011
Type Article in Periodical
Magazine / Source American Mineralogist
MU Faculty or unit

Faculty of Science

Citation
Doi http://dx.doi.org/10.2138/am.2011.3713
Field Solid matter physics and magnetism
Keywords sejkoraite-(Y); new mineral; uranyl; zippeite group; crystal structure; vibration spectroscopy; Jáchymov
Description Sejkoraite-(Y) is a new member of the zippeite group from the Cervená vein, Jáchymov (Street Joachimsthal) ore district, Western Bohemia, Czech Republic. It grows on altered surface of relics of primary minerals: uraninite, chalcopyrite, and tennantite. The crystal structure of sejkoraite-(Y) has been solved by the charge flipping method from single-crystal X-ray diffraction data and refined to Robs = 0.060 with GOFobs = 2.38, based on 6511 observed reflections. Raman and infrared spectra of sejkoraite-(Y) are discussed.
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