Bivouac on ČIERNA SKALA in the Tribeč Mountains
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Description: Autumn bivouac on the rhyolite hill Čierna skala in the Tribeč mountains (453 m a.s.l.).
Mineralogical curiosity: At the Čierna skala peak, on the ridge east of Horné Lefantovce at 453 m a.s.l., tourmaline /schorl/ occurs in blocks of vein quartz. It forms veins up to 3 cm thick of irregular shape or black prismatic crystals up to 0.1 mm in size.
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Video length: 02:15
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