The mineral assemblages at the abandoned burning spoil-heaps in the Rosice-Oslavany Coalfield, Czech RepublicArticle PDF
The mineral assemblages at the abandoned burning spoil-heaps in the Rosice-Oslavany Coalfield, Czech Republic
Mineral assemblages formed recently at the abandoned burning spoil-heaps of the Kukla coal mine in Oslavany and Ferdinand coal mine in Zastávka. They originated in three stages. Pyrometamorphic stage I Tmax >1 100 °C produced hematite, corundum, cristobalite and various glasses (Si-rich sandstone dominant protolith). Minerals of ellestadite group, periclase, magnesioferrite, srebrodolskite, and accessoric cuspidine, kumtyubeite and rondorfite are typical for pyrometamorphosed dolomite-anhydrite-gypsum dominant protolith. Relics of early “fumarolic” phase, with minerals crystallizing from gas exhalations at T >100 °C (sulfur, sal ammoniac), including products of rock decomposition by hot gases, are present only locally. The spoil-heaps cooling stage II produced calcite, aragonite, gypsum and anhydrite. In the final stages III the atmospheric water infiltration and evaporation produced gypsum, jarosite and magnesian sulfates (hexahydrite, and others).
Pavla Dokoupilová, Department of Geology, UP Olomouc, Tř. 17. listopadu 12, 771 46 Olomouc, email: email@example.com
Stanislav Houzar, Department of Mineralogy and Petrography, Moravian Museum, Zelný trh 6, 659 37 Brno, e-mail: firstname.lastname@example.org
Jiří Sejkora, Department of Mineralogy and Petrology, National Museum, Václavské nám. 68, 115 79, Praha 1, e-mail: email@example.com