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Mixed-layer crystal structures of the hydrobiotite type in tuffs of the Doupovské hory Mts. region
Melka, Karel ; Adamová, M. ; Haladová, I.
Mineralogical investigation of mica flakes occuring in tuffs of the Doupovské hory Mts. Was carried out as part of a regional study on volcanistic rocks. The volcanic area of the Doupovské hory Mts. Belongs to the extensive Ohře Rift originated in Early Cenozoic time. The phlogopite-bearing tuff, green-grey in colour, was collected from an outcrop at Oleška near Doupov. Based on geochemical criteria, the volcanistic rock studied contains some tephra clasts derived from alkali basalt-basanite rocks.

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