Selenide Mineralization in the Příbram Uranium and Base-Metal District (Czech Republic)

Škácha, Pavel; Sejkora, Jiří; Plášil, Jakub

doi:10.3390/min7060091

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Selenide Mineralization in the Příbram Uranium and Base-Metal District (Czech Republic)

by

Pavel Škácha

^1,2,*,

Jiří Sejkora

² and

Jakub Plášil

³

¹

Mining Museum Příbram, Hynka Kličky Place 293, Příbram VI, 261 01 Březové Hory, Czech Republic

²

Department of Mineralogy and Petrology, National Museum, Cirkusová 1740, Prague 9, 193 00 Horní Počernice, Czech Republic

³

Institute of Physics ASCR, v.v.i., Na Slovance 2, 182 21 Prague 8, Czech Republic

^*

Author to whom correspondence should be addressed.

Minerals 2017, 7(6), 91; https://doi.org/10.3390/min7060091

Submission received: 3 March 2017 / Revised: 25 May 2017 / Accepted: 29 May 2017 / Published: 4 June 2017

(This article belongs to the Special Issue Se-Bearing Minerals: Structure, Composition, and Origin)

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Abstract

Selenium mineralization in the Příbram uranium and base-metal district (Central Bohemia, Czech Republic) bound to uraninite occurrences in calcite hydrothermal veins is extremely diverse. The selenides antimonselite, athabascaite, bellidoite, berzelianite, brodtkorbite, bukovite, bytízite, cadmoselite, chaméanite, clausthalite, crookesite, dzharkenite, eskebornite, eucairite, ferroselite, giraudite, hakite, klockmannite, naumannite, permingeatite, příbramite, sabatierite, tiemannite, and umangite were found here, including two new mineral phases: Hg-Cu-Sb and Cu-As selenides. Those selenides—and in some cases their sulphidic equivalents—are characterized using wavelength-dispersive spectroscopy, reflected light, powder X-ray diffraction, single crystal X-ray diffraction, Raman spectroscopy, and electron backscatter diffraction. The selenide mineralization in the Příbram uranium district is bound to the border of the carbonate-uraninite and subsequent carbonate-sulphidic stages. Selenides crystallized there at temperatures near 100 °C in the neutral-to-weakly-alkaline environment from solutions with high oxygen fugacity and a high Se₂/S₂ fugacity ratio.

Keywords: selenides; chemical composition; crystal structure; wavelength-dispersive spectroscopy; X-ray diffraction; Příbram

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MDPI and ACS Style

Škácha, P.; Sejkora, J.; Plášil, J. Selenide Mineralization in the Příbram Uranium and Base-Metal District (Czech Republic). Minerals 2017, 7, 91. https://doi.org/10.3390/min7060091

AMA Style

Škácha P, Sejkora J, Plášil J. Selenide Mineralization in the Příbram Uranium and Base-Metal District (Czech Republic). Minerals. 2017; 7(6):91. https://doi.org/10.3390/min7060091

Chicago/Turabian Style

Škácha, Pavel, Jiří Sejkora, and Jakub Plášil. 2017. "Selenide Mineralization in the Příbram Uranium and Base-Metal District (Czech Republic)" Minerals 7, no. 6: 91. https://doi.org/10.3390/min7060091

APA Style

Škácha, P., Sejkora, J., & Plášil, J. (2017). Selenide Mineralization in the Příbram Uranium and Base-Metal District (Czech Republic). Minerals, 7(6), 91. https://doi.org/10.3390/min7060091

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Selenide Mineralization in the Příbram Uranium and Base-Metal District (Czech Republic)

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